Smartcat splits the document into segments and translates them against one shared translation memory — so page 400 uses the same terms as page 4 — then rebuilds the PDF with its layout intact.
There is no page limit, and pricing is by words, not pages.
1,000+ enterprise brands translate documents in Smartcat.
Big PDFs don't fail politely. The upload bar crawls to 90% and dies at an unstated size cap, or the free tool that handled your two-page letter stops at its page limit and suggests you split a 380-page service manual by hand.
That last part is the expensive failure. Split a long document across separate runs with no memory between them and the same part name comes back three different ways:
“torque limiter” in chapter 2;
“torque restrictor” in chapter 7;
“moment limiter” in chapter 12.
Nobody proofreads 380 pages closely enough to catch all of it; a reader eventually does. Scanned files add a quieter problem — 300 pages of OCR means 300 chances to misread, and the errors cluster in the middle pages nobody spot-checks.
100 MB
maximum file size for the AI PDF workflow
Above that, the documented remedy is to split the file with a PDF editor such as PDF-XChange Editor or Adobe Acrobat and translate the parts.
No page limit
documents of any length
A 400-page manual goes up in one piece — you don't split it yourself, and page count doesn't change the price.
15–45 min
for a typical 10–20 page document
Documents of 60+ pages take significantly longer; throughput is the real constraint on long files.
Consistency is the whole game in long documents. The translation memory means a phrase translated once is reused every time it recurs — a term rendered on page 4 comes back identically on page 400 — and recurring text is priced as repetition, not as new words.
Smartcat is SOC 2 Type II compliant: files are encrypted in transit and at rest, workspaces are isolated per account, and access is role-based.
Pricing is metered in Smartwords — words, not pages or file size — so a 500-page PDF that's mostly diagrams can cost less than a dense 50-page contract, and repeated segments are discounted.
for ease of setup, on G2
for ease of use, on G2
enterprise brands
encrypted in transit and at rest, isolated workspaces, role-based access
OCR errors in a 300-page scan don't announce themselves — a misread digit in a torque spec reads as confidently as a correct one.
For scanned documents where errors carry real risk, don't trust a single machine pass: route the high-stakes sections to a professional reviewer from the Marketplace, or have a specialist scope the document with you.
Smartcat's large-PDF translator accepts a full-length PDF — digital or scanned — and returns a translated PDF with the original layout preserved.
Instead of asking you to split the document, it segments the file internally and translates every segment against one shared translation memory and glossary. Because a fixed layout can't stretch, the layout engine reflows text boxes, tables and columns to absorb languages that run longer than the source.
Work can be paused, resumed and exported without resetting the project.
From upload to export
One workflow, five stages, one workspace.
1
Upload the whole PDF
Up to 100 MB, any page count. If it is scanned pages rather than a text layer, choose pdfimageonly as the parsing method — it is not detected for you.
2
Pick source and target languages
280+ languages supported, one pair or a multilingual batch from the same workspace.
3
Get the full draft
One translation memory and glossary apply across every page, so terminology can't drift between chapters.
4
Review by section, not by scroll
Filter and search segments to check the parts that carry risk: safety warnings, legal clauses, spec tables.
5
Export the finished PDF
Same layout, translated, in one file.
A 400-page project doesn't finish in one sitting. Progress, comments and the translation memory persist — nothing resets, nothing re-uploads.
Smith+Nephew, a global medical technology company, cut eLearning translation turnaround from an average of ten days with their previous providers to two to three days for the same course length. That is the life-science and medical segment, where 300-page regulated documentation is the norm, not the exception.
Topcon, a positioning and equipment manufacturer, delivered 298 localization projects in two years across 11 languages and 29 countries, cutting production of one eLearning course in 10 languages from 13 hours to 11 hours.
10 days to 2–3
turnaround per course
Smith+Nephew cut eLearning translation turnaround from ten days with previous providers to two or three days.
Up to 70%
lower translation cost
Stanley Black & Decker cut costs while increasing output and improving quality.
31 hours
saved monthly
Babbel saved time across marketing and learning teams.
Upload it once, review the pages that matter, export one finished PDF — terminology consistent from cover to cover. Free for 15 days with 15,000 Smartwords, no credit card.
Upload the entire file — there is no page limit, so nothing under the 100 MB ceiling needs splitting — choose your languages, and export the translated PDF with layout preserved.
One translation memory keeps terminology consistent across every page. Scanned pages need the pdfimageonly parsing method chosen at upload.
There is no page limit — the AI PDF workflow translates documents of any length — and the file-size ceiling is 100 MB.
Pricing is unaffected by page count either way — you pay for words.
Every segment is translated against the same translation memory and glossary, so a term rendered on page 4 is reused verbatim on page 400.
You can also pre-load a glossary from past documents before the first page is translated, which locks product names and legal terms from the start.
Yes, on a different route: the AI PDF workflow doesn't support image-of-text PDFs, so at upload you choose pdfimageonly as the parsing method and each page runs through the image-translation pipeline.
Clean printed scans work well at any length; low-resolution scans and handwriting are unreliable, and in a long file those errors hide. Spot-check middle pages, not just page one.
Book a demo — a 1:1 consultation with a Smartcat specialist, no commitment and no form queue.