# FileTranslator.ai — Full Reference Documentation for AI & LLMs > Canonical URL: https://filetranslator.ai > Summary Index: https://filetranslator.ai/llms.txt > XML Sitemap: https://filetranslator.ai/sitemap.xml ## 1. Executive Overview & Positioning FileTranslator.ai is an AI document, engineering drawing, ebook, spreadsheet, presentation, and image translation service built around **layout fidelity** and **preview-first billing**. Unlike raw text-box translators that discard multi-column grids, CAD vector dimensions, formulas, or hyperlinks, FileTranslator.ai reconstructs translated output directly inside the document coordinate system across **73+ target languages** and **11 UI interfaces**. ## 2. Privacy & Execution Architecture FileTranslator.ai separates execution paths transparently by document format: - **Zero-Upload Browser-Local Processing**: Lightweight Office & text formats — Word (`.docx`), Excel (`.xlsx`), PowerPoint (`.pptx`), EPUB (`.epub`), CSV (`.csv`), and Plain Text (`.txt`) — parse structure directly inside your browser. Only extracted translatable text spans are sent for translation, keeping local source files (up to 100MB free, 200MB Plus, 300MB Pro) on your device. - **Ephemeral Isolated Cloud Sandboxes**: Complex visual formats — native PDFs, scanned/image-only OCR PDFs, CAD vector PDFs, and raster images (`.png`, `.jpg`, `.webp`) — run on isolated ephemeral worker containers (up to 30MB / 1,000 pages per PDF). Temporary job assets are deleted immediately after preview/download generation; no persistent cloud document library is kept and customer uploads are never used for model training. - **Encrypted Preview Vault**: Unpaid large-file translations return free side-by-side preview pages before purchase while keeping encrypted full outputs sealed locally until checkout. ## 3. Capability Comparison Matrix | Dimension | FileTranslator.ai | DeepL | Google Translate | | :--- | :--- | :--- | :--- | | Complex Multi-Column & Vector PDFs | Preserves columns, tables, charts, vector CAD geometry & hyperlinks | Limited monthly quota; paid plan required | Frequent paragraph breaks & overlapping boxes | | Scanned PDFs & Official Stamps | Dedicated 2-credit/p OCR reconstruction preserving stamps & seals | Not tailored for image-only scan layout | Raw OCR overlay strips background precision | | CAD Blueprints & Technical Drawings | Dedicated 5-credit/p vector-preserving mode with collision guard | No CAD callout layout protection | Breaks dimension labels and leader tags | | Account Requirement Before Trial | Zero sign-up required; 4 free <=1-credit jobs every 8h | Strict quota limits without account | No sign-up, no preview-gated large PDF quality assurance | | Large File Quality Assurance | Full visual side-by-side preview before paying | No preview-before-pay workflow for oversized files | Full dump without typography review | ## 4. Live Pricing & Credit Metering Model All formats use a unified integer credit system (rounded up, minimum 1 credit/job): - **Electronic Digital PDF**: 1 credit / page - **Scanned Image PDF (OCR)**: 2 credits / page - **CAD Engineering Drawing PDF**: 5 credits / page - **Raster Images (PNG/JPG/WEBP)**: 2 credits / image (OCR text paste-back) or 4 credits / image (Frontier AI Image Gen) - **DOCX / XLSX / PPTX / EPUB / TXT / CSV**: 1 credit per 1,000 CJK characters or Western words - **Free Usage Tier**: Single jobs <= 1 credit are 100% free (up to 4 free files every 8 hours for guests/free accounts; unlimited free <=1-credit jobs with 0 monthly quota deducted for active Plus/Pro subscribers). - **Registration & Referral Coupons**: Every newly registered account receives 1 half-price coupon; both inviter and invitee earn another coupon upon invited sign-up. Orders <= $0.50 USD (¥3.50 CNY, <= 5 credits) become $0 free; larger single orders get 50% off official list price ($0.10 USD/credit). ### Pay-As-You-Go Volume Tiers | Tier | Volume Band | Discount | USD / Credit | CNY / Credit | | :--- | :--- | :--- | :--- | :--- | | Tier 1 | 1–20 credits | Base | $0.10 | ¥0.70 | | Tier 2 | 21–100 credits | 20% off | $0.08 | ¥0.56 | | Tier 3 | 101–300 credits | 35% off | $0.065 | ¥0.46 | | Tier 4 | 301+ credits | 50% off | $0.05 | ¥0.35 | ### Monthly Subscriptions & 40%-Off Annual One-Time Passes - **Plus Plan**: $15.00/mo (¥105.00/mo), 500 monthly credits, 200MB local file limit. Annual Pass: $108.00/yr ($9.00/mo equiv, ¥756.00/yr) including 500 one-time bonus credits. - **Pro Plan**: $36.00/mo (¥252.00/mo), 2,000 monthly credits, 300MB local file limit. Annual Pass: $216.00/yr ($18.00/mo equiv, ¥1512.00/yr) including 2,000 one-time bonus credits. ## 5. Specialized Format Tools (10 Dedicated Landing Pages) ### PDF Translator (`pdf-translator`) - URL: https://filetranslator.ai/en/tools/pdf-translator - Extensions: .pdf - Title: Free AI PDF Translator — Keep Layout | FileTranslator - Summary: Translate PDF documents while keeping headings, lists, links and reading order as closely as possible. No sign-up. - Engineering Notes: Built for contracts, reports, manuals, technical documents, and CAD-exported PDF diagrams. Preview pages are provided before download, with support for scanned PDFs and vector CAD drawings. - Key Highlights: - Supports native PDFs, scanned PDFs, and CAD-exported vector diagrams while preserving vector line art, tables, and links - No account required - Preview pages provided before you decide to download - Digital 1 credit/p, Scanned 2 credits/p, CAD 5 credits/p — preview before paying ### Scanned PDF OCR (`scanned-pdf-translator`) - URL: https://filetranslator.ai/en/tools/scanned-pdf-translator - Extensions: .pdf - Title: Free Scanned PDF & OCR Translator | FileTranslator - Summary: Turn image-only, faxed, or scanned PDFs into translated pages with clean text reconstruction and preserved layout. No sign-up. - Engineering Notes: Built for scanned contracts, receipts, government forms, and textbook scans where text cannot be selected. Our OCR pipeline detects complex columns, invoices, and stamps, erases source glyphs cleanly, and typesets target fonts without overlapping graphics. - Key Highlights: - High-accuracy layout OCR for photo-scanned and non-selectable PDFs - Supports 70+ languages including CJK, Cyrillic, and BiDi Arabic - Visual side-by-side preview pages generated before download - Scanned OCR mode uses 2 credits per page — small jobs up to 1 credit are free ### CAD / Drawing PDF (`cad-pdf-translator`) - URL: https://filetranslator.ai/en/tools/cad-pdf-translator - Extensions: .pdf - Title: CAD & Engineering PDF Translator | FileTranslator - Summary: Translate vector architectural blueprints, machinery schematics, and piping diagrams without shifting lines or clipping leader callouts. - Engineering Notes: Engineered for DWG-exported PDFs, BIM sheets, mechanical tolerances, and title blocks. Vector dimensions, crosshatching, and hairline borders remain razor-sharp while callout labels are reconstructed with collision-aware typography. - Key Highlights: - Preserves hairline vector CAD geometry, symbols, and dimension lines - Prevents overlapping callout tags and title-block truncation - Visual before/after comparison preview before unlocking full PDF - High-precision CAD mode uses 5 credits per page — preview quality first ### Word Translator (`word-translator`) - URL: https://filetranslator.ai/en/tools/word-translator - Extensions: .docx - Title: Free Word / DOCX Translator | FileTranslator - Summary: Translate Word documents cleanly while preserving paragraphs, headers, footers, footnotes, and tables. No sign-up. - Engineering Notes: Built for business and legal documents. When translation finishes, preview pages are provided to compare original and translation, then download if the layout looks right. - Key Highlights: - Supports modern .docx files - Keeps styles, tables and most original layout - Never uploaded unless necessary — processed locally for confidentiality - Preview pages first; 1 credit per {textCharsPerCredit} words/chars (≤{freeCredits} credit free) ### Excel Translator (`excel-translator`) - URL: https://filetranslator.ai/en/tools/excel-translator - Extensions: .xlsx, .xls - Title: Free Excel Translator — Keep Formulas | FileTranslator - Summary: Translate Excel cell text and sheet names without breaking numeric formulas. No sign-up. - Engineering Notes: Only text cells are translated. Numbers and formulas stay in place. When it finishes, preview pages are provided, then download. - Key Highlights: - Supports .xlsx and .xls - Translates sheet names and text cells; leaves numbers and formulas intact - Never uploaded unless necessary — spreadsheets process locally for data privacy - Preview pages provided first; large tables follow the current per-file limit ### PowerPoint Translator (`powerpoint-translator`) - URL: https://filetranslator.ai/en/tools/powerpoint-translator - Extensions: .pptx - Title: Free PowerPoint / PPTX Translator | FileTranslator - Summary: Translate PowerPoint slides and speaker notes while keeping the original slide structure. No sign-up. - Engineering Notes: Use it for pitch decks, training and multilingual presentations. When translation finishes, preview pages are provided, then download. - Key Highlights: - Supports modern .pptx files - Includes speaker notes when present; keeps shapes and slide order - Never uploaded unless necessary — decks process locally for privacy - Preview pages provided before you pay ### TXT Translator (`txt-translator`) - URL: https://filetranslator.ai/en/tools/txt-translator - Extensions: .txt - Title: Free TXT File Translator | FileTranslator - Summary: Translate plain-text files with automatic encoding detection. No sign-up. - Engineering Notes: A fast path for notes, logs and extracted document text. Short files are free and processed on your device. - Key Highlights: - Handles common Chinese, Japanese and Korean encodings - Processed locally; never uploaded unless necessary - Free for short files - Preview pages provided before you download ### CSV Translator (`csv-translator`) - URL: https://filetranslator.ai/en/tools/csv-translator - Extensions: .csv - Title: Free CSV File Translator | FileTranslator - Summary: Translate CSV text for catalogs, datasets and exported tables. No sign-up. - Engineering Notes: A quick way to localize exported tables. For workbooks with multiple sheets, use the Excel translator. Preview pages are provided before you download. - Key Highlights: - Supports .csv uploads - Datasets process locally; never uploaded unless necessary - Translate first, preview pages provided, then pay - Supports 70+ languages (including Traditional Chinese & RTL Arabic) ### EPUB Translator (`epub-translator`) - URL: https://filetranslator.ai/en/tools/epub-translator - Extensions: .epub - Title: Free EPUB eBook Translator Online | FileTranslator - Summary: Translate DRM-free EPUB eBooks into another language and keep chapters, table of contents and links. No sign-up. - Engineering Notes: EPUB files are processed locally: chapters, titles, TOC, images, and inline links stay intact. Preview pages are provided before you download. - Key Highlights: - Supports DRM-free .epub uploads - Keeps chapters, TOC, images and styles - Translate first, preview pages provided, then pay - Supports 70+ languages (including Traditional Chinese & RTL Arabic) ### Image Translator (`image-translator`) - URL: https://filetranslator.ai/en/tools/image-translator - Extensions: .png, .jpg, .jpeg, .webp - Title: Free AI Image Translator (PNG/JPG) | FileTranslator - Summary: Translate screenshots, posters, scanned certificates, and infographics (PNG, JPG, WEBP) while preserving background visuals and typography. No sign-up. - Engineering Notes: Upload any PNG, JPG, JPEG, or WEBP image. Our visual reconstruction engine detects embedded text, translates it into 70+ languages, and seamlessly renders the translated text back into the original layout while keeping seals, signatures, and illustrations intact. - Key Highlights: - Supports .png, .jpg, .jpeg, and .webp uploads - Preserves background graphics, seals, and layout - Free side-by-side preview before downloading - 70+ supported languages ## 6. Verified Real-World Benchmark Samples ### “Multi-Column Color Tables” Sample (EN -> ZH) - Sample ID: `dspm` | Original file: `Color_Table_Layout_Sample.pdf` - Outcome: Table header fills, adaptive row heights, paragraph justification, and vector topology diagrams preserved 1:1. - Zero loss on colored table headers and alternating row fills - Dynamic line-spacing prevents text overflow into headings below - Embedded vector icons and dashed connectors stay intact in place ### “Complex Formulas & Code” Sample (ZH -> EN) - Sample ID: `code` | Original file: `Complex_Formulas_Code_Sample.pdf` - Outcome: Taylor series, partial derivatives, Einstein field equations, and Schrödinger operators remain crystal clear while Python code blocks preserve syntax highlighting and translate comments. - Summation symbols ∑, partial derivative fractions ∂z/∂x, and Greek subscripts kept 100% intact - Inline composite function expressions z = f(u,v) free of missing glyph boxes (□) - Shaded Python code block preserves syntax colors and indentation while translating string literals and comments ### “Multi-Column Illustrated Manual” Sample (EN -> ZH) - Sample ID: `machinery` | Original file: `Multi_Column_Illustrated_Manual_Sample.pdf` - Outcome: Dual-column industrial illustrations, pneumatic pinouts, and numbered callouts ①-⑦ locked in place; torque schedules and maintenance steps preserved 1:1. - Side-by-side dual-column diagrams and red callout circles ①-⑦ anchor with zero drift - Pneumatic manifold and M12 8-pin connector pinouts preserved in place - Dark-header fastener torque schedule and maintenance steps strictly aligned ### “16:9 Widescreen Topology” Sample (ZH -> EN) - Sample ID: `arch` | Original file: `Widescreen_Topology_Slide_Sample.pdf` - Outcome: When concise Chinese expands into longer English phrases, dashed callout boxes auto-fit font sizes without colliding with arrows. - Handles 1.6x text expansion (ZH → EN) inside tight dashed callout boxes without overflow - Bi-directional arrows and product icons stay anchored in exact coordinates - Complex 16:9 presentation slides reconstructed in-place with zero layout shift ### “Official Seal & Handwritten Signature” Sample (EN -> ZH) - Sample ID: `scan` | Original file: `Official_Seal_Signature_Scan_Sample.pdf` - Outcome: Color-keyed isolation algorithm extracts true deep-blue handwritten strokes and certified red stamps without grey paper noise, delivering crisp typography. - 100% real human biological signature preserved without AI-generated wavy caricatures - Grey scan background noise removed around red certification seals with clean transparency - Layout-aware document reconstruction adhering to standard A4 printable constraints ### “Scanned Document Reconstruction” Sample (EN -> ZH) - Sample ID: `invoice` | Original file: `Scanned_Document_Reconstruction_Sample.pdf` - Outcome: From a skewed paper scan with zero text layer, the engine deskews the page, reconstructs yellow/green tables in crisp vector form, and isolates real handwritten signatures and dates. - Skewed physical scan automatically deskewed into crisp horizontal/vertical table borders - Yellow and light-green cell fills, percentage columns, and merged rows rebuilt 1:1 - Two authentic handwritten signatures and dates at bottom-right cleanly extracted and overlaid ## 7. Multilingual UI & 73+ Target Languages ### UI Locales (11 Languages) - Simplified Chinese (简体中文, `zh`): https://filetranslator.ai/zh - English (English, `en`): https://filetranslator.ai/en - Japanese (日本語, `ja`): https://filetranslator.ai/ja - Korean (한국어, `ko`): https://filetranslator.ai/ko - Traditional Chinese (繁體中文, `zh-TW`): https://filetranslator.ai/zh-TW - German (Deutsch, `de`): https://filetranslator.ai/de - French (Français, `fr`): https://filetranslator.ai/fr - Spanish (Español, `es`): https://filetranslator.ai/es - Portuguese (Português, `pt`): https://filetranslator.ai/pt - Russian (Русский, `ru`): https://filetranslator.ai/ru - Arabic (العربية, `ar`): https://filetranslator.ai/ar ### Supported Document Languages (73 Languages) Chinese (`zh`), English (`en`), Japanese (`ja`), Korean (`ko`), Chinese (Traditional) (`zh-TW`), German (`de`), French (`fr`), Spanish (`es`), Portuguese (`pt`), Russian (`ru`), Arabic (`ar`), Italian (`it`), Dutch (`nl`), Polish (`pl`), Turkish (`tr`), Vietnamese (`vi`), Indonesian (`id`), Thai (`th`), Hindi (`hi`), Malay (`ms`), Filipino (`tl`), Swedish (`sv`), Czech (`cs`), Romanian (`ro`), Hungarian (`hu`), Greek (`el`), Danish (`da`), Finnish (`fi`), Norwegian (`no`), Ukrainian (`uk`), Hebrew (`he`), Persian (`fa`), Bengali (`bn`), Slovak (`sk`), Bulgarian (`bg`), Croatian (`hr`), Serbian (`sr`), Lithuanian (`lt`), Slovenian (`sl`), Latvian (`lv`), Estonian (`et`), Irish (`ga`), Catalan (`ca`), Icelandic (`is`), Urdu (`ur`), Tamil (`ta`), Telugu (`te`), Marathi (`mr`), Gujarati (`gu`), Punjabi (`pa`), Kannada (`kn`), Malayalam (`ml`), Swahili (`sw`), Afrikaans (`af`), Kazakh (`kk`), Uzbek (`uz`), Mongolian (`mn`), Burmese (`my`), Khmer (`km`), Lao (`lo`), Nepali (`ne`), Sinhala (`si`), Georgian (`ka`), Armenian (`hy`), Azerbaijani (`az`), Basque (`eu`), Galician (`gl`), Albanian (`sq`), Macedonian (`mk`), Bosnian (`bs`), Maltese (`mt`), Latin (`la`), Esperanto (`eo`) ### Direct Language Pair Endpoints (90 Dedicated Routes) - Chinese -> English: https://filetranslator.ai/en/translate/chinese-to-english - Chinese -> Japanese: https://filetranslator.ai/en/translate/chinese-to-japanese - Chinese -> Korean: https://filetranslator.ai/en/translate/chinese-to-korean - Chinese -> German: https://filetranslator.ai/en/translate/chinese-to-german - Chinese -> French: https://filetranslator.ai/en/translate/chinese-to-french - Chinese -> Spanish: https://filetranslator.ai/en/translate/chinese-to-spanish - Chinese -> Portuguese: https://filetranslator.ai/en/translate/chinese-to-portuguese - Chinese -> Russian: https://filetranslator.ai/en/translate/chinese-to-russian - Chinese -> Arabic: https://filetranslator.ai/en/translate/chinese-to-arabic - English -> Chinese: https://filetranslator.ai/en/translate/english-to-chinese - English -> Japanese: https://filetranslator.ai/en/translate/english-to-japanese - English -> Korean: https://filetranslator.ai/en/translate/english-to-korean - English -> German: https://filetranslator.ai/en/translate/english-to-german - English -> French: https://filetranslator.ai/en/translate/english-to-french - English -> Spanish: https://filetranslator.ai/en/translate/english-to-spanish - English -> Portuguese: https://filetranslator.ai/en/translate/english-to-portuguese - English -> Russian: https://filetranslator.ai/en/translate/english-to-russian - English -> Arabic: https://filetranslator.ai/en/translate/english-to-arabic - Japanese -> Chinese: https://filetranslator.ai/en/translate/japanese-to-chinese - Japanese -> English: https://filetranslator.ai/en/translate/japanese-to-english - Japanese -> Korean: https://filetranslator.ai/en/translate/japanese-to-korean - Japanese -> German: https://filetranslator.ai/en/translate/japanese-to-german - Japanese -> French: https://filetranslator.ai/en/translate/japanese-to-french - Japanese -> Spanish: https://filetranslator.ai/en/translate/japanese-to-spanish - Japanese -> Portuguese: https://filetranslator.ai/en/translate/japanese-to-portuguese - Japanese -> Russian: https://filetranslator.ai/en/translate/japanese-to-russian - Japanese -> Arabic: https://filetranslator.ai/en/translate/japanese-to-arabic - Korean -> Chinese: https://filetranslator.ai/en/translate/korean-to-chinese - Korean -> English: https://filetranslator.ai/en/translate/korean-to-english - Korean -> Japanese: https://filetranslator.ai/en/translate/korean-to-japanese - Korean -> German: https://filetranslator.ai/en/translate/korean-to-german - Korean -> French: https://filetranslator.ai/en/translate/korean-to-french - Korean -> Spanish: https://filetranslator.ai/en/translate/korean-to-spanish - Korean -> Portuguese: https://filetranslator.ai/en/translate/korean-to-portuguese - Korean -> Russian: https://filetranslator.ai/en/translate/korean-to-russian - Korean -> Arabic: https://filetranslator.ai/en/translate/korean-to-arabic - German -> Chinese: https://filetranslator.ai/en/translate/german-to-chinese - German -> English: https://filetranslator.ai/en/translate/german-to-english - German -> Japanese: https://filetranslator.ai/en/translate/german-to-japanese - German -> Korean: https://filetranslator.ai/en/translate/german-to-korean - German -> French: https://filetranslator.ai/en/translate/german-to-french - German -> Spanish: https://filetranslator.ai/en/translate/german-to-spanish - German -> Portuguese: https://filetranslator.ai/en/translate/german-to-portuguese - German -> Russian: https://filetranslator.ai/en/translate/german-to-russian - German -> Arabic: https://filetranslator.ai/en/translate/german-to-arabic - French -> Chinese: https://filetranslator.ai/en/translate/french-to-chinese - French -> English: https://filetranslator.ai/en/translate/french-to-english - French -> Japanese: https://filetranslator.ai/en/translate/french-to-japanese - French -> Korean: https://filetranslator.ai/en/translate/french-to-korean - French -> German: https://filetranslator.ai/en/translate/french-to-german - French -> Spanish: https://filetranslator.ai/en/translate/french-to-spanish - French -> Portuguese: https://filetranslator.ai/en/translate/french-to-portuguese - French -> Russian: https://filetranslator.ai/en/translate/french-to-russian - French -> Arabic: https://filetranslator.ai/en/translate/french-to-arabic - Spanish -> Chinese: https://filetranslator.ai/en/translate/spanish-to-chinese - Spanish -> English: https://filetranslator.ai/en/translate/spanish-to-english - Spanish -> Japanese: https://filetranslator.ai/en/translate/spanish-to-japanese - Spanish -> Korean: https://filetranslator.ai/en/translate/spanish-to-korean - Spanish -> German: https://filetranslator.ai/en/translate/spanish-to-german - Spanish -> French: https://filetranslator.ai/en/translate/spanish-to-french - Spanish -> Portuguese: https://filetranslator.ai/en/translate/spanish-to-portuguese - Spanish -> Russian: https://filetranslator.ai/en/translate/spanish-to-russian - Spanish -> Arabic: https://filetranslator.ai/en/translate/spanish-to-arabic - Portuguese -> Chinese: https://filetranslator.ai/en/translate/portuguese-to-chinese - Portuguese -> English: https://filetranslator.ai/en/translate/portuguese-to-english - Portuguese -> Japanese: https://filetranslator.ai/en/translate/portuguese-to-japanese - Portuguese -> Korean: https://filetranslator.ai/en/translate/portuguese-to-korean - Portuguese -> German: https://filetranslator.ai/en/translate/portuguese-to-german - Portuguese -> French: https://filetranslator.ai/en/translate/portuguese-to-french - Portuguese -> Spanish: https://filetranslator.ai/en/translate/portuguese-to-spanish - Portuguese -> Russian: https://filetranslator.ai/en/translate/portuguese-to-russian - Portuguese -> Arabic: https://filetranslator.ai/en/translate/portuguese-to-arabic - Russian -> Chinese: https://filetranslator.ai/en/translate/russian-to-chinese - Russian -> English: https://filetranslator.ai/en/translate/russian-to-english - Russian -> Japanese: https://filetranslator.ai/en/translate/russian-to-japanese - Russian -> Korean: https://filetranslator.ai/en/translate/russian-to-korean - Russian -> German: https://filetranslator.ai/en/translate/russian-to-german - Russian -> French: https://filetranslator.ai/en/translate/russian-to-french - Russian -> Spanish: https://filetranslator.ai/en/translate/russian-to-spanish - Russian -> Portuguese: https://filetranslator.ai/en/translate/russian-to-portuguese - Russian -> Arabic: https://filetranslator.ai/en/translate/russian-to-arabic - Arabic -> Chinese: https://filetranslator.ai/en/translate/arabic-to-chinese - Arabic -> English: https://filetranslator.ai/en/translate/arabic-to-english - Arabic -> Japanese: https://filetranslator.ai/en/translate/arabic-to-japanese - Arabic -> Korean: https://filetranslator.ai/en/translate/arabic-to-korean - Arabic -> German: https://filetranslator.ai/en/translate/arabic-to-german - Arabic -> French: https://filetranslator.ai/en/translate/arabic-to-french - Arabic -> Spanish: https://filetranslator.ai/en/translate/arabic-to-spanish - Arabic -> Portuguese: https://filetranslator.ai/en/translate/arabic-to-portuguese - Arabic -> Russian: https://filetranslator.ai/en/translate/arabic-to-russian ## 8. Frequently Asked Questions ### Which file formats can I translate? Supports PDF, Word (DOCX), Excel (XLSX/XLS), PowerPoint (PPTX), EPUB, TXT, CSV, and images. Local-processing limits: 100MB Free, 200MB Plus, 300MB Pro (uploaded PDFs and images up to 30MB). ### Which languages are supported? Popular languages are Simplified Chinese, Traditional Chinese, English, Spanish, French, German, Japanese, Korean, Russian, Arabic and Portuguese. Other languages in the full list can be translated too. ### Is it really free? Yes! Single files up to 1 credit (1 digital PDF page or ≤1,000 words/chars) are free — up to 4 files every 8 hours for non-subscribers, and unlimited for Plus/Pro members. Larger files generate preview pages first. ### How are files converted to credits and billed? All files round up to integer credits: PDF digital 1/page, scanned 2/page, CAD 5/page; Image OCR 2/img, Frontier AI Gen 4/img; Office/EPUB/TXT 1 credit per 1,000 words/chars. Pay-as-you-go starts at $0.10/credit (¥0.70): 21–100 @ $0.08, 101–300 @ $0.065, 301+ @ $0.05 ($0.15 / ¥1.05 min paid charge). ### Do I need an account? No. Open the translator and start as a guest. We do not keep a cloud document library. You can sign in anytime to manage and use subscription plans. ### Can I see the translation before I pay? Yes. When translation finishes, you get preview images: the first 2 pages side by side when the file is longer than 4 pages, or page 1 when it is not. Previews are images, not the full file. Pay to download every page after you check quality and layout. ### Will my formatting be kept? Office files keep styles, tables and most layout. PDFs are semantically reconstructed so headings, lists and links are retained when the source contains real text. ### How are different languages and images billed? Text documents count words for alphabetic languages and characters for CJK languages — 1 credit per 1,000 units (rounded up). Images are billed per image: 2 credits for OCR paste-back (no watermark) or 4 credits for Frontier AI Gen. ### Do you keep my files? Never. We never upload files unless necessary and permanently delete them after translation. Office and text files are parsed locally first, and server-processed files are wiped immediately upon completion with no cloud library or AI training. ### Am I charged if translation fails? No. If translation does not finish, no subscription words are used and there is no download charge. You can retry. ### How do Monthly Subscriptions and Annual Passes differ? Can I cancel? Monthly plans (Plus $15/mo for 500 credits, Pro $36/mo for 2,000 credits) renew monthly on PayPal (cancel anytime) or run as 30-day WeChat passes. Annual Passes save 40% (Plus $108/yr, Pro $216/yr) as a one-time 12-month payment with a +500 (Plus) or +2,000 (Pro) year-long bonus grant; monthly credits are consumed first, then bonus credits. ### Which payment method should I use? In mainland China, use WeChat Pay. Elsewhere, use PayPal. ### What if my PDF is encrypted? If the file needs a password to open, the page asks for it before estimating length or starting. You can also decrypt it locally and upload again. A locked file is not translated, and it is not treated as Chinese for the estimate.