PDF Too Large for Google Translate? How to Translate a PDF Larger Than 10 MB
Google Translate refuses a document over 10 MB, and a PDF over 300 pages, whichever comes first. You have three options: shrink the file, cut it into parts, or upload it to a translator with a higher limit. The right one depends on whether the size or the page count stopped you.
Updated · Published by DocTranslator, Translation Cloud LLC
First, find out which limit you hit
Open the file's properties on your computer and note two numbers: the size in megabytes and the number of pages. Google states both limits on its help page for translating documents (read in October 2026), and the same page says it does not translate text in scanned PDFs at all.
A 12 MB file of 40 pages is a size problem. A 6 MB file of 420 pages is a page problem. A 3 MB scan of a letter is neither, but Google will still hand it back untranslated, because the page is a picture of words rather than text.
Why a PDF gets that big
Text is light. A typed 300-page novel can sit under 2 MB. The weight comes from what is around the text:
- Scanned pages. Each one is a full-page image, often 300 to 600 KB at a readable resolution, so 30 pages of a scanned contract pass 10 MB.
- Photos and charts. Annual reports and catalogues embed print-quality images that the screen never needed.
- Embedded fonts. A designed document can carry several complete font files, a few megabytes before any page is drawn.
Option 1: compress the PDF
Compression re-saves the images at a lower resolution. When photos are the weight, Compress PDF can take a 25 MB brochure under 10 MB with no visible change on screen.
It has two limits of its own. It does not change the page count, so a 450-page PDF stays 450 pages and Google still refuses it. And on scanned pages, heavy compression smears the letters, which makes OCR misread them and puts the mistakes into the translation. Compress a scan gently, or not at all.
Option 2: split it, translate the parts, merge them
Split PDF cuts a file by page range, for example a 900-page manual into three files of 300 pages. Each part then fits Google's page limit, as long as each is also under 10 MB.
The cost is in the joins:
- Each part is translated without knowing the others, so a defined term in a contract can come back worded one way in part one and another way in part three.
- A table or a sentence that runs across a split point is cut in two, and each half is translated out of context.
- The translated parts restart their own page numbering unless you put them back together with Merge PDF, and a table of contents no longer points to the right pages.
Splitting is still the right move for a file that is bigger than every plan's limit.
Option 3: upload the file whole
A translator with a higher limit takes the PDF as it is and returns one translated file, with page 250 still on page 250. These are DocTranslator's limits per file:
- Free: up to 20 MB or 20 pages in one upload
- Basic: up to 100 MB or 300 pages in one upload
- Pro and Business: up to 1 GB or 5,000 pages in one upload
The large PDF translator page explains the upload step by step, with the price of each plan.
Which way out fits your file
| If your PDF is | Then |
|---|---|
| Under 20 MB and 20 pages | Any plan takes it, including Free. Upload it as it is. |
| Over 10 MB because of photos, but under 300 pages | Compressing may bring it under Google's 10 MB, or upload it to Basic (up to 100 MB). |
| Between 300 and 5,000 pages | Compression cannot help: the page count is the problem. Pro and Business take it in one piece. |
| Over 1 GB or over 5,000 pages | No plan takes it whole. Split it into parts under the limit and translate each part. |
If the large PDF is a scan
A scan needs OCR before anything can be translated: software that reads the letters off the image. Google Translate's document upload does not do this, so a scanned PDF comes back unchanged even when it is small enough. DocTranslator runs OCR on every plan. The scanned document guide covers what scan quality OCR needs and how to fix a crooked or faint page before you upload it.
What other PDF translators accept
Every online translator states a ceiling, and they differ widely: Google stops at 10 MB, others at 50 MB, 100 MB or 500 MB depending on the plan. Our comparison of ten PDF translators lists each tool's published file size limit next to its source, so you can check the figure yourself.
PDF Too Large to Translate: Questions
Why does Google Translate say my PDF is too large?
Its document upload takes files up to 10 MB, and PDFs of up to 300 pages. A file over either limit is refused with that message, even if the other number is small.
How do I translate a 100-page PDF?
If it is under 10 MB, Google Translate takes it. If not, compress it when images make it heavy, or upload it to a plan that takes 100 pages: Basic goes up to 300 pages and 100 MB per file.
Can I translate a 500-page PDF for free?
Not in one piece. Google Translate stops at 300 pages, and DocTranslator's Free plan at 20 pages. Splitting into parts gets under Google's limit at the cost of consistency between parts; Pro and Business take the 500 pages as one file.
Does splitting a PDF change the translation?
It can. Each part is translated on its own, so repeated terms may be worded differently from part to part, and a sentence cut at a split point loses its context. Translating the file whole avoids both.
Will compressing my PDF hurt the translation?
Not for typed text, which compression leaves alone. For scanned pages it can: blurred letters are harder for OCR to read, and every misread word is translated as it was misread.
Upload the Whole PDF
One file up to 1 GB or 5,000 pages on Pro and Business. Start with a free account.
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