Free PDF Compressor Online - BSR Tools

What is the BSR PDF Compressor?

The BSR PDF Compressor reduces the file size of PDF documents so they meet upload limits on government recruitment portals, email attachments, and form submissions. Many scanned certificate PDFs can be 5-20MB, while portals only accept 1-2MB. Our tool renders each PDF page as an optimised JPEG image and recompiles the document at your chosen quality level — Maximum Compression for the smallest file, Balanced for optimal quality-size ratio, or Best Quality for minimal loss.

How PDF Compression Works

The tool uses a render-and-recompress approach: each page of your PDF is rendered as a high-resolution image using the PDF.js library, then the image quality is reduced to your specified level, and finally all compressed images are assembled into a new PDF using jsPDF. This method is highly effective for scanned documents (which are already image-based) and can achieve 50-80% size reduction. For text-heavy PDFs with vector graphics, the compression converts text to images — use the "Best Quality" setting to maintain readability.

Government Portal File Size Limits (2026)

• SSC (CGL/CHSL/MTS): Photo 100KB, Signature 50KB, Certificates 2MB each
• UPSC: Photo 300KB, Signature 200KB, Documents up to 5MB
• IBPS/SBI Banking: Photo 200KB, Signature 100KB, Documents 1-2MB
• Railway RRB: Photo 100KB, Signature 50KB, Certificates 2MB
• State PSC: Varies by state, typically 1-3MB per document

Tips for Optimal PDF Compression

Use Balanced compression (default) for most government document uploads — it typically achieves 40-60% reduction while keeping text readable. If your compressed PDF is still too large, switch to Maximum Compression. For certificates with fine print, use Best Quality to ensure all text remains legible during document verification. Always open the compressed PDF to verify content before uploading to the exam portal.