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Compress a PDF to 1 MB

Get a PDF under 1 MB for an upload form. Text is kept when possible; pages become images only if they must.

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Hitting a size limit

The text is kept first, with stronger image compression at each step. Only if the file still does not fit are the pages turned into images, and the result tells you when that happened.

Drop a PDF here or click to choose onePDF files up to 100.0 MB each.

Processed on this device with your browser. Nothing is uploaded.

How it works

A 1 MB cap is typical when a portal takes a whole application pack as one PDF: a set of scanned passport pages, bank statements or academic records for a visa, a residency renewal or a university application. Choose the PDF and it is rebuilt at the best quality that fits under 1 MB.

How it works, honestly: the text is kept first. The photos and scanned pages inside the PDF are resampled to the resolution the page really needs and re-saved as JPEG, duplicate and unused data is removed, and the file is recompressed, so text stays selectable and searchable and links and form fields keep working. Only when that still cannot reach the size you need are the pages turned into images as a last resort; then the text can no longer be selected, searched or copied, and the result tells you so. Keep your original.

One megabyte is a comfortable budget for a scanned application pack in black and white; colour and photos use it up faster. If the limit is for all documents together, merge them first with Merge PDF, then compress the combined file so the budget is shared sensibly between pages.

What the 1 MB compressor did to real files

Measured on 2026-09-22 with this page's own compressor in Chrome. The test files were a 3-page scanned document (each page a 300 dpi image of printed text, 4.8 MB) and a 6-page report exported from a word processor (selectable 10.5-point text and one photo, 253 KB).

A 1 MB target is generous for a few scanned pages: the scan kept 150 dpi, which prints well, and still dropped from 4.8 MB to 544 KB. Longer scans get less per page: as a rule of thumb from this measurement, 1 MB covers about five or six such pages at 150 dpi in colour, and more in grayscale.

A text PDF that is already under 1 MB is returned as it is, like our 253 KB report; there is nothing to gain from compressing it.

Test fileResultLowest image resolutionWhat the tool did
3-page scan, 4.8 MB544 KBabout 150 dpiText kept (Recommended level)
6-page text report, 253 KB253 KB (unchanged)not neededAlready under 1 MB: returned as it is

When 1 MB is not enough

  • Long scans: split the PDF and upload the parts separately if the form has several upload fields.
  • Colour photos inside a report: keep the report as exported from Word, which is usually already small, and compress only scanned attachments.
  • Forms that say "maximum 1 MB" may count 1,000,000 bytes, which is 976 KB here; type 976 in the target box if a file close to 1 MB is rejected.

How to use it

  1. Choose the PDF (merge several files first if the portal wants one).
  2. Turn on black and white for text scans.
  3. Click Compress PDF; the target is 1 MB.
  4. Check the reported resolution and zoom in on the result before uploading.

Frequently asked questions

Are my files uploaded?

No. The file is read and processed by your browser on your device; nothing is sent to a server. The PDF engine is downloaded from this site the first time you use a tool and then runs on your device.

Will the text still be selectable?

In most cases, yes: the tool shrinks the images inside the PDF and cleans up the file, and leaves text, fonts, links and form fields as they are. Only if the size you need cannot be reached that way are the pages turned into pictures, and the result says so clearly. For a scan this changes little, because its pages were pictures already (any OCR text layer is kept in keep-text mode).

What if the PDF hardly gets smaller?

Text-only PDFs made by Word or a web browser are often already compact: text takes very little space and there are no big images to shrink. The tool tells you when nothing could be saved and keeps your original. Turning such pages into images would usually make them bigger, not smaller.

Is 1 MB 1,000 KB or 1,024 KB?

This page targets 1,024 KB (1,048,576 bytes). If a portal rejects the file, it may count 1 MB as 1,000,000 bytes; use the main compressor with a target of 950 KB.

My statement is 40 pages. Will it fit?

Probably not at a readable resolution. Remove pages the application does not need, or ask whether you can upload several files.

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