PDFWelder
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A PDF merger and document toolkit for iPhone and iPad.

Combine files, scan documents, edit and sign PDFs, organize pages, then compress, convert or protect them. PDFWelder processes your documents on your device without uploading them to a server.

Download on the App Store

One free credit is included. PDFWelder PRO includes unlimited use of available tools.

Tools for the whole document

Start with a paper document, photo or PDF, and choose only the tools you need.

  • Merge, scan and organize

    Combine PDFs, scan paper documents, add photos, reorder or rotate pages, and split large files.

  • Edit, fill and sign

    Edit text, draw, crop, add images, fill forms, annotate, and add a drawn, typed or imported signature.

  • Compress and convert

    Reduce file size, export PDF pages as images, or turn Word, Excel, PowerPoint, EPUB and Markdown files and web pages into PDFs.

  • Extract, listen and translate

    Copy text with OCR, make scans searchable, listen to a page, or translate its text on your device. Translate requires iOS 18 or later.

  • Protect and finish

    Add passwords, permissions, watermarks, page numbers and Bates stamps. Redact content, flatten forms, or edit metadata.

  • Compare, check and recover

    Compare versions, inspect what is inside a file, sign with a certificate or check who signed, pull out attachments, and try to recover damaged files.

Your documents stay private

PDFWelder handles document content on your device. Your PDFs, scans, text, signatures and passwords are not uploaded to a server for processing.