PDFtoByte
Runs in your browser

Compress PDF to 100 KB

Drop a PDF on the red sheet, or tap it to choose one. Your file never leaves your browser.

When you reduce the size, pages are resampled as JPEG images: the text stops being selectable.

How to compress a PDF to 100 KB

Upload forms, job portals and government sites often set a maximum file size, and 100 KB is one of the limits people run into. That is a tight budget. It works best for one to three pages that are mostly text, because every extra page shares the same 100 KB. Photos and colour scans use the budget up fast, so expect some softness: the live preview shows how the first page will look before you compress.

  1. Drop your PDF on the red sheet, or tap it to choose a file.
  2. The slider jumps to about 100 KB. Nudge it if you want more quality or a smaller file.
  3. Press Compress, check the real size, and download the file.

How much space does each page get?

The 100 KB is shared by the whole document, so more pages means less room per page:

PagesAbout per page
1100 KB
250 KB
520 KB
1010 KB
205 KB

Is my PDF uploaded to a server?

No. The document is processed inside your browser and is never sent to any server. Close the page and nothing is left behind.

Will the result be exactly 100 KB?

We aim for 100 KB, counting 1 KB as 1,000 bytes (slightly stricter than the 1,024 some systems use). The slider shows an estimate; in our tests the real file usually came out a little under it, and you see the real size before you download. If it lands over, lower the slider a bit and compress again.

Why can’t I select the text afterwards?

To make the file smaller, the pages are turned into JPEG images. The text stays readable to the eye but can no longer be copied or searched. If you need to keep selectable text, use a compressor that only recompresses the images instead.

Other sizes

50 KB, 200 KB, 300 KB, 500 KB, 1 MB, 2 MB, 5 MB, or choose any size you like.

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