pdfcat
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pdfcat processes files in your browser whenever possible. For tools that require server processing, files are handled temporarily and deleted after processing according to our file-retention policy.
Learn more about file securityFree PDF tool
Merge PDF Files Online Free
Use pdfcat to merge PDF files for free. No sign-up, no watermark, and your file is processed directly in your browser whenever possible.
Free • No sign-up • No watermark • Browser-based where possible
Fast and simple
Combine multiple PDFs into one clean file while keeping the upload, preview, processing, and download flow simple.
No watermark
pdfcat does not add a watermark to your completed PDF. The tools are free and supported by a small advertisement before download.
How it works
Merge PDF Files Online Free with pdfcat
Is this tool free?
Yes. pdfcat is free to use, requires no account, and adds no watermark.
Will my PDF be uploaded?
Your file is processed in your browser whenever possible. Some tasks may require secure temporary processing when browser-only processing is not technically enough.
Why do I see an advertisement before download?
pdfcat is free because sponsors help cover processing costs. Your download becomes available after a short countdown.
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Edit PDFAdd text, insert images, annotate, sign, visually cover content, organize pages, and preview your changes before downloading.Compress PDFReduce PDF file size quickly with a browser-first compression workflow and a clear preview before download.Split PDFExtract selected pages or separate a document into smaller files without creating an account or adding a watermark.PDF To WordUse text extraction and OCR-first workflows to prepare PDF content for editable documents. Full DOCX export is planned for a future release.Word To PDFThe Word to PDF page is ready for the conversion workflow. Native DOCX conversion will be added after the browser processing path is validated.PDF To JPGExport PDF pages as image files using a browser-based preview and conversion flow. PNG export is available now and JPG output is planned.JPG To PDFTurn JPG and PNG images into a PDF, choose page sizing, preview the output, and download without a watermark.OCR PDFRecognize text from scanned PDFs and images using Tesseract-based OCR in the browser where possible.Sign PDFPlace a typed signature on a selected page, preview the placement, and download the signed PDF.Protect PDFPassword protection is being prepared for a secure browser-first workflow. Current security-related tools include metadata cleanup and visual redaction.Unlock PDFUnlocking tools will only support documents you have permission to modify. Browser-friendly support is planned without account creation or payment setup.AI PDF DesignerAI PDF Designer is being prepared as a guided document layout workspace for smarter page composition, visual cleanup, and presentation-quality exports.Annotate PDFHighlight, note, and mark up PDF pages.Crop PDFTrim page edges and scanner borders.Delete PagesRemove unwanted pages from a PDF.Edit MetadataChange title, author, subject, and keywords.Extract ImagesPull embedded images out of a PDF.Extract TextSave PDF text as a TXT file.Flatten PDFLock form fields and annotations into the page.Organize PDFReorder PDF pages visually.Page NumbersAdd flexible page numbering.PDF to PNGExport pages as PNG images in a ZIP.Redact PDFVisually cover sensitive content.Rotate PDFRotate all or selected pages.Split Each PDFExport every page as separate PDFs in a ZIP.Watermark PDFAdd text or image watermarks with opacity.All PDF ToolsBrowse every pdfcat page in one place.Free PDF ToolsFree to use, no sign-up, no watermark.API Coming SoonDeveloper API waitlist and beta updates.SecurityHow pdfcat keeps files private.File RetentionHow long temporary processing stores files.Privacy PolicyPrivacy details for pdfcat.TermsTerms for using pdfcat.Cookie PolicyCookie policy for pdfcat.