Compress PDFs to fit a 150KB upload limit. 150KB is generous enough to allow basic image content while still meeting most government and university portal caps.
150KB is a more realistic target than 50–100KB caps because it allows a small embedded image or two. For applications that want a passport photo plus a signature in one PDF, 150KB is achievable with reasonable image compression. This tool applies object-stream compression to text content; for images you may need additional processing.
Choose your PDF and click Compress. The tool applies pdf-lib object-stream compression. If output exceeds 150KB, pre-compress your source images (target 100×100 px for signatures, 600×800 px for photos at 70% JPG quality) and re-create the PDF.
Use it for portal uploads with a 150KB cap — many state-level Indian government services and some university portals. Verify the exact limit on the portal before generating your final PDF.
For passport-photo-style PDFs: scan or photograph at 600×800 px, save as JPG quality 70%, then create the PDF. The image alone will be ~50KB, leaving room for any text content. Tools like Photoshop, GIMP and even Microsoft Paint can do the image preprocessing.
Yes for text PDFs and PDFs with one or two compressed images. Multi-image PDFs may exceed.
Not directly — but pdfinfo (free command-line) breaks down PDF content by type.
Re-scan at 150 DPI grayscale rather than 300 DPI colour for a 4× size reduction at minimal quality loss.
Explore more pdf tools on the tool hub — or jump straight to the Merge PDF, Rotate PDF, Unlock PDF.