Reduce PDF File Size Online
Portals that reject your PDF for being over 2MB, email servers that bounce attachments — the fix is compression. The tool below compresses PDFs locally in your browser: it re-encodes embedded images and strips redundant objects, typically cutting size 40–80% while keeping text razor sharp. Your document is never uploaded.
Typical reduction of 40–80% on scan-heavy PDFs.
Text stays selectable and sharp — only embedded images are re-encoded.
100% local: pdf-lib compression with zero server processing.
Frequently Asked Questions
How do I reduce a PDF below 1MB or 2MB?
Drop your PDF into the compressor above and check the output size. Most scans and image-heavy documents fall 50–80% in size, comfortably under common 1MB/2MB upload limits.
Does compressing a PDF make the text blurry?
No. Text objects are preserved exactly; only embedded raster images are re-encoded at efficient quality. Selectable, searchable text remains intact.
Is it safe to compress confidential PDFs online?
With this tool, yes — 'online' only means it runs in a web page. Compression executes on your device, so contracts, transcripts, and medical records never leave your machine.
Sources & References
- ISO 32000-2:2020 PDF 2.0 specification for object streams and compression.
- Joint Photographic Experts Group (JPEG) ISO/IEC 10918 standard for embedded image re-encoding.
Try it now — 100% free, zero upload
No account, no ads, no file size limits. Opens instantly in your browser.