PDFtoByte
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Compress PDF to 500 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 500 KB

Upload forms, job portals and government sites often set a maximum file size, and 500 KB is one of the limits people run into. That is a workable budget for short documents. Pages that are mostly text usually stay readable, while colour scans and photos are what eat the budget. Lower the slider until the estimate sits at 500 KB, then check the preview.

  1. Drop your PDF on the red sheet, or tap it to choose a file.
  2. The slider jumps to about 500 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 500 KB is shared by the whole document, so more pages means less room per page:

PagesAbout per page
1500 KB
2250 KB
5100 KB
1050 KB
2025 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 500 KB?

We aim for 500 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, 100 KB, 200 KB, 300 KB, 1 MB, 2 MB, 5 MB, or choose any size you like.

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