Three steps. That's it.
Translate an entire PDF document in minutes. No technical knowledge required.
Pick a target language
Choose from 141 languages — including Spanish, Mandarin, Hindi, Portuguese, Arabic, French, German, Japanese, Korean, and more.
Upload your PDF
Drag and drop your .pdf file or click to browse. Files up to 100,000 characters.
Download translated PDF
Your translated .pdf is ready in minutes — same layout, same images, same fonts, just in a different language.
Built for accuracy, speed & security
Every text block translated by GPT in reading order — layout, images, and formatting preserved exactly as the original PDF, with OCR support for scanned documents.
Translate PDF Online
Our translator extracts every text block from your .pdf — including OCR-aware extraction for scanned documents — translates each batch via GPT, and writes the result back into the same blocks.
FREE & No Sign-up Required
Our PDF translator is 100% free with no account required. Upload your file and download the translated PDF instantly — no daily limits, no watermarks.
Safe and secure processing
At SlideSpeak, we prioritize data security and privacy above all else. We ensure that every PDF file you upload is stored with top-notch encryption and automatically deleted after processing.
Why choose SlideSpeak?
Built for analysts, students, and teams who need a translated PDF quickly, accurately, and without giving up their files.
141 Languages Supported
From Spanish and Mandarin to Welsh and Yoruba, our translator covers 141 BCP-47 languages including regional dialects — every major world language plus the long tail.
OCR for Scanned PDFs
Even scanned PDFs work — our backend detects scanned content and runs OCR before translation, then paints the translated text back over the original.
Free to Use
Our PDF translator is completely free with no daily limits, no watermarks, and no hidden fees. Smallpdf caps you at 2 docs per day; we don't.
Fast Processing
Most PDFs translate in minutes. Our backend batches text efficiently — long documents process at the same speed as short ones.
Secure and Private
Your PDF files are handled with the utmost security and privacy. Files are encrypted in transit and permanently deleted after translation.
No Software Needed
Translate PDF files directly in your browser. No PDF reader, no Adobe license, no desktop install required.
Designed for accurate, multilingual documents
Our translator handles PDFs of any length up to 100,000 characters. OCR support detects scanned documents automatically and paints translated text back over the original layout.
141
Languages supported
100K
Characters per file
OCR
Scanned PDFs supported
60K+
Files processed
How we stack up
See why SlideSpeak is the simplest way to translate a PDF document.
| Features |  | DeepL | Google Translate | Smallpdf |
|---|---|---|---|---|
| Free translations | Unlimited | 3 files/month | Free | 2 documents/day |
| Sign-up required | No signup | Account required | Google account | No signup (1st file) |
| Browser-based (no install) | Yes | Yes | Yes | Yes |
| Languages supported | 141 languages | 100+ languages | 200+ languages | 100+ languages |
| Max file / page limit | 100,000 characters | 5 MB on Free | 10 MB / 300 pages | 5 MB |
| OCR for scanned PDFs | Yes (auto) | Paid tier | Not supported | Paid tier |
| Output format preserved (.pdf) | Editable PDF | Not editable on Free | Layout often broken | Layout preserved |
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