--- title: "Translate Large Files with AI | AI Glot" description: "Translate large CSV, Excel, XLIFF, JSON, subtitle, and localization files with your glossary and instructions applied consistently at scale." language: en canonical: https://ai-glot.com/ source: AI Glot website --- # High-quality language translations for large files. Translate thousands of strings across CSV, Excel, XLIFF and more. Apply your glossary and instructions across the whole file. [Translate a file](https://app.ai-glot.com/signup) First 5,000 words free ## From source file to translated file in three steps ### 1. Upload the file you already use Upload a CSV, spreadsheet, localization file, subtitle bundle, or another supported format. AI Glot reads the content and prepares the right translation workflow. [Upload a file →](https://app.ai-glot.com/signup) ### 2. Tell AI Glot how to translate it Describe the languages, tone, terminology, and fields that matter in plain language. Review the proposed scope and refine it when the file needs something specific. [Start with your instructions →](https://app.ai-glot.com/signup) ### 3. Download the finished file AI Glot translates at scale, checks each item, and returns a clean file in the format your workflow expects, ready to review, publish, or re-import. [Translate your first file →](https://app.ai-glot.com/signup) 80 languages available * [Word documents](https://ai-glot.com/file-formats/word-translation) * [PDF documents](https://ai-glot.com/file-formats/pdf-translation) * [PowerPoint decks](https://ai-glot.com/file-formats/powerpoint-translation) * [Excel workbooks](https://ai-glot.com/file-formats/excel-translation) * [CSV files](https://ai-glot.com/file-formats/csv-translation) * [Markdown files](https://ai-glot.com/file-formats/markdown-translation) * [Subtitle files](https://ai-glot.com/file-formats/srt-translation) * [EPUB books](https://ai-glot.com/file-formats/epub-translation) * [JSON files](https://ai-glot.com/file-formats/json-translation) * [XLIFF files](https://ai-glot.com/file-formats/xliff-translation) * [Android XML](https://ai-glot.com/file-formats/android-xml-translation) * [ZIP bundles](https://ai-glot.com/file-formats/zip-translation) ## One translation workflow for the files your work depends on More than 35 formats, each with a workflow designed around its own content, from Word paragraphs and spreadsheet cells to localization units and subtitle timestamps. [See all free file translators →](https://ai-glot.com/file-formats) ## Give every translation the context it needs A good translation is not just a model output. AI Glot turns your brief, glossary, file structure, and target languages into one reviewable plan before the large job starts. ### Plain-language instructions Specify tone, audience, non-translatable terms, or format-specific rules without rebuilding the file by hand. ### Glossary consistency Keep product names and domain terminology aligned across thousands of strings and recurring batches. ### 2 translation quality modes Standard for customer-facing copy. Lite for bulk content, at a third of the credits. Picked per file, not locked to your plan. ## Language translation that fits the way your team already works Start with the job you need to finish, then use the right file format underneath it. ### [Product catalogs](https://ai-glot.com/solutions/ecommerce-product-catalog-translation) [Translate product titles, descriptions, SEO text, and attributes across large catalogs.](https://ai-glot.com/solutions/ecommerce-product-catalog-translation) [Explore use case →](https://ai-glot.com/solutions/ecommerce-product-catalog-translation) ### [Websites and CMS content](https://ai-glot.com/solutions/cms-content-translation) [Localize page copy, metadata, and structured CMS exports with your brand voice.](https://ai-glot.com/solutions/cms-content-translation) [Explore use case →](https://ai-glot.com/solutions/cms-content-translation) ### [Apps and software](https://ai-glot.com/solutions/app-localization-file-translation) [Translate interface strings and localization resources while keeping terminology consistent.](https://ai-glot.com/solutions/app-localization-file-translation) [Explore use case →](https://ai-glot.com/solutions/app-localization-file-translation) ### [SEO at scale](https://ai-glot.com/solutions/seo-metadata-translation) [Adapt large sets of titles, descriptions, and landing-page content for local markets.](https://ai-glot.com/solutions/seo-metadata-translation) [Explore use case →](https://ai-glot.com/solutions/seo-metadata-translation) ### [Store imports](https://ai-glot.com/solutions/shopify-product-translation) [Translate Shopify exports and bring the localized catalog back into your store.](https://ai-glot.com/solutions/shopify-product-translation) [Explore use case →](https://ai-glot.com/solutions/shopify-product-translation) ### [Help centers](https://ai-glot.com/solutions/help-center-translation) [Localize articles, answers, and support content without losing your product vocabulary.](https://ai-glot.com/solutions/help-center-translation) [Explore use case →](https://ai-glot.com/solutions/help-center-translation) ### [Product listings](https://ai-glot.com/solutions/marketplace-listing-translation) [Prepare consistent listings for every market from one structured source file.](https://ai-glot.com/solutions/marketplace-listing-translation) [Explore use case →](https://ai-glot.com/solutions/marketplace-listing-translation) ### [Game localization](https://ai-glot.com/solutions/game-localization-file-translation) [Translate dialogue and interface strings while preserving variables and game terminology.](https://ai-glot.com/solutions/game-localization-file-translation) [Explore use case →](https://ai-glot.com/solutions/game-localization-file-translation) ## Bring large-file translation into your own stack Use the same translation engine from your product, scripts, or AI agents without turning every file into a custom parsing project. ### [File Translation API](https://ai-glot.com/docs/api/overview) [Submit, configure, monitor, and download large translation jobs programmatically.](https://ai-glot.com/docs/api/overview) [Read the docs **→**](https://ai-glot.com/docs/api/overview) ### [MCP & CLI for AI agents](https://ai-glot.com/docs/mcp/overview) [Let your coding and automation agents translate files through a controlled AI Glot workflow.](https://ai-glot.com/docs/mcp/overview) [Read the docs **→**](https://ai-glot.com/docs/mcp/overview) ## Questions about translating large files with AI Glot ### What does AI Glot translate? AI Glot provides language translation for large files, and returns the same format it received. It supports documents (Word, PowerPoint, OpenDocument, InDesign, EPUB, Markdown, HTML and plain text), CSV and Excel spreadsheets, subtitles and lyrics (SRT, WebVTT, ASS, TTML and LRC), and localization formats such as XLIFF (including Trados, memoQ and Phrase), JSON, JSON Lines, ARB, YAML, TOML, PO, Fluent, Android XML, iOS strings, String Catalogs, Java properties, INI, PHP language files, RESX, XML and Qt Linguist. ZIP bundles of one format are supported too. ### How does AI Glot maintain quality across a large file? You describe the audience, tone, terminology, target languages, and any file-specific rules in plain language. AI Glot combines those instructions with your workspace glossary and applies that context throughout the translation job instead of treating every row as an unrelated prompt. ### Can I review the plan before translation starts? Yes. AI Glot analyzes the file first and prepares a reviewable scope with the content to translate, target languages, word volume, and estimated credit cost. You approve that plan before the full translation runs. ### Can I translate a ZIP file? Yes, when the ZIP contains files from one supported family, for example a folder of SRT subtitle files. AI Glot processes the files together and returns a translated bundle. ### Can I use a glossary and custom instructions together? Yes. Your glossary keeps approved terms consistent across projects, while batch instructions let you describe what this particular file needs, such as tone, audience, protected names, or fields to exclude. ### Why not upload a large file directly to a general AI assistant? General AI tools can work for a small sample. Large production files need a repeatable workflow: analyze the whole file, apply the same terminology and instructions throughout it, show the translation scope before launch, track progress, and return a usable file. AI Glot is built around that job. ### Is human review still useful? Yes. AI Glot is designed to produce strong first-pass translations at scale and make the work easier to review. Human review is still recommended for high-stakes, legal, regulated, or flagship customer-facing content. ## Ready to translate your large files? [Create a free account →](https://app.ai-glot.com/signup) Your first 5,000 words free