Compress PDF to 150KB

Drop your PDF into the box above and press Compress. The tool is already set to a 150KB target, so it automatically applies the lightest compression that gets you under 150KB, then hands you a download link. The whole process happens on your own device.

Most can. Text-heavy documents compress dramatically. Very long scanned documents — say 100+ pages of high-resolution photographs — may not reach 150KB while staying readable. In that case we return the smallest usable version and tell you the target was missed, so you can split the document instead.

We always try the gentlest setting first and only escalate if the file is still too large. For typical business documents at 150KB, text stays perfectly sharp because it remains real vector text — only embedded images are downsampled.

Yes. Bookmarks, the table of contents, internal cross-references, hyperlink annotations and interactive form fields all survive compression. Only the encoding of images and content streams is altered — the document's structural and navigational layers are preserved.

Not while it is encrypted. A protected PDF has its content streams encrypted, so the compressor cannot read the images it needs to optimize. Remove the password in your PDF reader first, compress, then re-apply protection to the smaller output if you still need it.

Very well, because the file itself is never transmitted. Only the page and the compression engine are downloaded, once, and they are then cached. Uploading a 100 MB PDF to a server-based tool would consume 100 MB of your data allowance; here it consumes none.

It depends on the content. Scanned or image-heavy documents commonly shrink by 70–95%. Text-only PDFs that were already optimized may only drop 5–20%, since there is little redundant data left to remove.

Yes. The interface is fully responsive and the engine runs on iOS and Android. Bear in mind that mobile devices have less memory, so very large files (over roughly 50 MB) may be slow or fail on older phones.

Page dimensions, margins and layout are always preserved exactly. Print appearance only changes if images are downsampled below your printer's resolution. Less Compression holds images near 200 DPI, which prints cleanly on any office printer; avoid Extreme mode for anything going to paper.

Yes, and this is usually desirable. Author names, the originating software, revision history, comment threads and XMP blocks are stripped. That reduces file size and removes information you may not want to share — a genuine privacy benefit when sending documents externally.