Compress PDF to 500 KB: Get a PDF under 500 KB for online forms. Input: PDF, image files and values you enter. Output: Results shown on the page and a downloaded file. Privacy: Runs in your browser: inputs and files stay on your device and are not uploaded.
How to compress a PDF to 500 KB
- Drop your PDF, or several PDFs and photos of documents, on the box. They are combined into one file in the order you add them.
- The target is already set to 500 KB. Tick Black and white if colour is not needed.
- Press Compress to target. The tool picks the best quality that still fits and shows a before and after preview.
- Check that the text is readable, then download.
What fits in 500 KB
At 500 KB, a short document of a few pages stays clear, while longer scans drop to a lower resolution. If small print looks soft, try black and white or remove pages you do not need.
The limit is counted in decimal units (1 KB = 1,000 bytes, 1 MB = 1,000,000 bytes), so the file is accepted whichever way a website counts. Everything runs in your browser; nothing is uploaded.
FAQ
Which forms ask for a PDF under 500 KB?
Mostly smaller online services with one upload box per document. For example, Wokingham Borough Council's Housing Online uploads (UK) have a maximum file size of 500 KB. Check the instructions next to each upload box, since one form can use several limits.
What fits in 500 KB?
A one- or two-page certificate, ID document or letter fits well at a readable resolution. Long scans need a lower resolution; for those, Black and white usually keeps the text clearer than shrinking a colour scan.
Should I scan at a lower resolution instead?
You can, but it is not necessary: scan or photograph the document normally and let the tool find the highest quality that fits. That way you keep the original if the portal later accepts a larger file.
Is 500 KB counted as 500,000 or 512,000 bytes?
The tool aims for 500,000 bytes, the smaller of the two, so the file passes whichever way the website counts.