Useful Free PDF Tools You Can Use in Your Browser

Compress a PDF when the file is too large

If a PDF is too large for email or an upload form, the PDF Compressor can reduce its file size. Compression is especially useful for scanned or image-heavy documents.

Check the finished quality before replacing the original, because stronger image compression can reduce detail.

Want to try the idea yourself? Use the PDF Compressor.

Merge or split PDF files

Use the PDF Merger when several documents belong together in one file. Use the PDF Splitter when you only need selected pages or want to divide one large document into smaller sections.

These are opposite workflows, and both are useful for organising forms, scans, invoices and reports.

If you want to explore this topic further, see How to Compress a PDF and Reduce File Size.

Fix page order and numbering

The PDF Page Reorderer can correct pages scanned or combined in the wrong sequence. Once the order is final, Add Page Numbers to PDF can place a consistent number on each page.

Doing the order first avoids adding numbers and then moving them into the wrong sequence.

Add a watermark

For documents that need a visible label such as DRAFT or CONFIDENTIAL, the Add Watermark to PDF tool can place watermark text across pages.

Choose an opacity and position that remains visible without making the document difficult to read.

Convert between PDFs and images

The PDF ↔ Image Converter can turn PDF pages into images or package images into a PDF. This is useful when a page needs to be shared as a picture or several scans need to become one document.

Choose the tool based on the actual job rather than repeatedly exporting through office software, which can sometimes change page size or quality.