Compress PDF to 500KB
Check whether your PDF can fit a 500KB limit. Compress it in your browser, see the exact output size, and download it when it meets your needs.
500KB = 512000 bytes · No upload
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Compress one file and check its exact size before downloading.
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PDF only · up to 30MB · up to 60 pagesA size limit may be impossible for a long or complex PDF. We will show the actual result. Modified PDFs may lose valid digital signatures.
How to compress a PDF to 500KB
Choose a PDF or drag it into the tool. The maximum size is already set to 500KB. Click Compress PDF and compare the measured result with the limit before downloading. If your PDF is already at or under 500KB, the original is kept.
For a tight limit, the default mode rebuilds pages as compressed images. This removes selectable text, live links, forms, bookmarks and accessibility information. Switch to Keep text and links if those features matter; that mode usually achieves a smaller reduction. Image-heavy scans tend to shrink more than text-only PDFs.
Not every PDF can reach 500KB. More pages and detailed graphics need more data, and aggressive compression may make small text hard to read. The tool reports when it cannot reach the limit and never labels an oversized result as successful. Check legibility before submitting the file.
For a 500KB attachment: try Light compression to retain more visual detail. If your PDF already fits, this tool returns it unchanged. If selectable text matters, try Keep text and links and check whether that result fits.
Need another limit? Try 100KB, 200KB, or use the general PDF compressor. Files stay on your device.