Frequently asked questions
Common questions about Micro PDF Tools — what files are supported, the limits, how the tools work, and privacy.
- Which file types can I use?
- For the PDF tools (Merge, Split, Organize, PDF to Image, Compress) you upload PDF files. For Image to PDF you can use JPG, PNG, and WebP images. The tools check the real file type, not just the extension, so a mislabeled file will be rejected.
- Is there a file size limit?
- The browser-based tools (Merge, Split, Organize, Image to PDF) are limited mainly by your device's memory, so very large files depend on your computer or phone. The server-based tools (PDF to Image, Compress) accept files up to roughly 50 MB.
- How many pages can a PDF have?
- The browser tools have no fixed page limit. The server tools process up to 300 pages per document; larger files are rejected to keep the service fast and fair for everyone.
- Does it work on mobile?
- Yes. The site is responsive and the tools work on phones and tablets. One note: reordering pages by dragging in Organize PDF is a desktop feature — on touch devices you can use the on-screen arrow buttons instead.
- Are my files uploaded to a server?
- For Merge, Split, Organize, and Image to PDF, no — everything happens inside your browser and your files never leave your device. Only PDF to Image and Compress need server processing; for those, the file is uploaded over a secure connection, processed, and deleted immediately afterward.
- What's the difference between the quality presets in Compress?
- Screen is the smallest (lowest resolution), Balanced is a good middle ground, and Print keeps the highest quality (largest file). Compression re-encodes the page images, so lower presets trade some sharpness for a smaller file.
- Why did Compress return my file at the same size?
- Compression mainly helps scanned or image-heavy PDFs. Text-only PDFs are already stored very efficiently, so there's little to shrink — and if compressing wouldn't make the file smaller, we return your original unchanged rather than hand back a larger file.
- When I convert a multi-page PDF to images, what do I get?
- Each page becomes its own image. A single-page PDF returns one image; a multi-page PDF returns a ZIP file containing one image per page.
- Is it free, and do I need an account?
- Yes, the tools are free to use, and no sign-up or account is required.