Just drop your PDF — we automatically analyze it and pick the best compression settings to shrink the file without hurting quality.
No sign-up required · Compression level is chosen automatically
We scan a sample of your PDF's pages to measure their resolution and visual complexity,
then pick the lightest compression that keeps everything sharp.
Text-heavy pages get compressed gently. Image-heavy or already-large pages
get compressed more aggressively.
Everything happens locally in your browser — nothing is uploaded.
Rather than making you pick between vague "low/medium/high" settings, this tool scans a sample of your PDF's pages first, checking their resolution and how image-heavy versus text-heavy each one is. It then picks compression settings automatically: text-heavy pages are compressed gently since there's little to gain, while image-heavy pages get more aggressive treatment since photos tolerate more compression before any difference is visible. The whole process runs locally in your browser.
No settings to configure — the tool measures your document and chooses the right compression level itself.
Text pages and image pages are treated differently, so text stays sharp while large images shrink the most.
Your PDF is analyzed and compressed entirely on your device — no upload, no server processing.
It depends entirely on the content. A PDF full of scanned photos can shrink dramatically; a mostly-text document may barely change size, since there's less redundant image data to remove.
The automatic analysis is tuned to avoid visible quality loss under normal viewing, but compression is always a trade-off. Check a few pages with fine detail before relying on the compressed version.
Yes, but expect smaller gains the second time — most of the recoverable file size is usually removed on the first pass.
No — the password needs to be removed with a PDF reader first, since the tool needs to read the page content to compress it.