Can I compress a PDF to 500KB or less?

Yes. Set the target size to 500 and select KB as the unit. For very small targets, try lowering the DPI to 96 or 72 to help the tool reach the limit without excessive quality loss.

Why is my PDF still too large after compression?

This usually happens when the PDF contains many high-resolution images. Try lowering the DPI preset to 72 (Web/Low). If the file is still above your target, the original content may be too dense to compress further without significant visual loss.

Will the text in my PDF still be selectable after compression?

No. This tool works by converting each PDF page to a JPEG image and rebuilding the PDF from those images. As a result, text will no longer be selectable or searchable in the output file. This trade-off is what allows precise file-size targeting.

What file size limits do visa and university portals typically use?

Common upload limits include 2MB for visa applications (e.g. Schengen, UK visa), 1MB for university admission portals, and 500KB for job application systems and email attachments. Use our tool to compress your PDF to any of these exact sizes.

Compress PDF to Exact Size (e.g., under 2MB)

Q: How do I compress a PDF to under 2MB?

Upload your PDF, set the target size to 2 MB, choose Standard (144 DPI) quality, then click Compress PDF. The tool automatically adjusts image quality until your file is at or below 2MB. No upload to a server required.

Q: Is my PDF uploaded to a server?

No. All processing happens entirely inside your browser using WebAssembly and JavaScript. Your file never leaves your device, making this tool safe for sensitive documents like bank statements, IDs, and visa applications.

Pick a PDF and choose your target size (e.g., 2 MB or 0.5 MB). Processing happens entirely on your device.

How to compress a PDF to an exact file size

Many upload portals for jobs, visas, or universities enforce strict file limits — "Max 2MB", "Under 500KB", or similar. Most PDF compressors offer generic "High / Medium / Low" presets that leave you guessing the final size and re-compressing multiple times.

The ToolShelf PDF Compressor lets you define the exact limit you need in MB or KB. It intelligently adjusts the JPEG quality in multiple passes until your file meets the requirement — all without uploading a single byte to any server.

Why process locally instead of uploading?

Unlike cloud-based PDF tools, ToolShelf processes your PDF directly in your browser using WebAssembly and PDF.js. Your file is never transmitted anywhere.

Privacy: Sensitive documents — bank statements, ID scans, visa applications — stay on your device.
Speed: No upload or download wait times. Processing starts immediately.
No account needed: No sign-up, no file limits, no watermarks.

Tips for reaching very small file sizes

If the tool cannot reach your target size at the default DPI:

Lower the DPI to 72: The Web/Low preset gives the smallest output, suitable for email attachments and web uploads where screen resolution is sufficient.
Split the PDF first: Use our PDF Splitter to reduce the number of pages before compressing.
Start with a smaller original: Scanned documents at 600 DPI can often be re-scanned at 300 DPI before processing.

Common file size limits by use case

Visa applications (Schengen, UK): Usually 2MB per document
University admission portals: Typically 1MB to 2MB
Job application systems: Often 500KB to 1MB
Email attachments: Most providers allow up to 10MB, but 2MB is the practical limit for mobile recipients

Frequently Asked Questions

How do I compress a PDF to under 2MB?

Upload your PDF, set the target to 2 MB, choose Standard (144 DPI) quality, and click Compress. The tool runs multiple passes to hit your exact limit automatically.

Can I compress a PDF to 500KB?

Yes. Set the target to 500 and switch the unit to KB. For very small targets, lower the DPI to 72 for the best chance of reaching the limit.

Is my PDF uploaded to a server?

No. Everything runs in your browser. Your file never leaves your device — safe for bank statements, IDs, and confidential documents.

Will text still be selectable after compression?

No. The tool converts pages to JPEG images to control file size precisely. Text will not be selectable in the output. This is the trade-off that enables exact-size targeting.

Why is my PDF still too large?

Try lowering the DPI to 72. If the file is still over the limit, the source document may have too many high-resolution images to compress further without severe quality loss. Consider splitting the PDF into smaller parts.