Does file merging upload my files?

No. All merge operations run locally in your browser, so files are never uploaded.

Which file types can I merge?

It merges many types including PDF, Word, PPT, Excel, CSV, TXT, Markdown, RTF and images.

Are the merge tools free?

Yes. Every merge tool is free to use without an account and runs directly in your browser.

Can I change the merge order?

Yes. After uploading you can drag to reorder, and the final file is merged exactly in the order you set.

File merge tools

Free online tools to merge PDF, Word, PPT, TXT, Markdown, CSV, RTF, Excel, and images while exporting native formats: PDF to PDF, Word to DOCX, PPT to PPTX, and images to PDF or a long image. All processing runs locally in your browser.

Files are processed locally in your browser and are not uploaded to a server.

File merge tools

What this category is for

Joining several files of the same kind sounds trivial, but "joining" means something different in every format: PDF concatenates page objects, Word has to merge document streams and stylesheets, Excel must decide between one combined sheet and one sheet per source, CSV has to handle repeated headers, and images need a choice between one tall strip and one page each.

Each tool here implements the logic its format actually needs, all in the browser, so the files you are merging are never uploaded.

Choosing between these tools

Documents: Merge PDF preserves the original layout most reliably. Word Merge outputs a single DOCX, resolving style conflicts in favour of the earlier document. PPT Merge joins slides from several decks. RTF Merge suits rich text exported from older editors.
Spreadsheets: Excel Merge lets you either pool all data into one sheet or give each source file its own sheet. CSV Merge appends rows, so check that the column order matches across your sources.
Plain text and images: TXT Merge and Markdown Merge concatenate in list order, which is how you reassemble a draft split by chapter. Image Merge stacks images into one tall PNG, or composes them into a PDF with one image per page.

Formats and capabilities compared

How ordering and structure are handled, format by format.

Format	Order comes from	Structure handling	Common pitfall
PDF	List order, drag to change	Page objects concatenated directly	Bookmarks and form fields may not survive
Word / RTF	List order	Document streams joined, stylesheets merged	Same-named styles resolve to the earlier document
Excel / CSV	List order	Rows appended, or one sheet per source	Mismatched column order silently misaligns data
Images	List order	Stacked vertically, or one per page	Differing widths leave blank margins in the strip

Limits that apply across this category

Check that your sources share the same structure before merging. CSV and Excel are the dangerous ones: one extra column, one missing column, or a different column order misaligns the result; and nothing reports an error, so you have to verify it yourself.

Merging is one-way; there is no unmerge. Keep the originals. PDFs can be cut apart again by page range with Split PDF, but for the other formats the boundary information no longer exists once merged.

Frequently asked questions

Does file merging upload my files?: No. All merge operations run locally in your browser, so files are never uploaded.
Which file types can I merge?: It merges many types including PDF, Word, PPT, Excel, CSV, TXT, Markdown, RTF and images.
Are the merge tools free?: Yes. Every merge tool is free to use without an account and runs directly in your browser.
Can I change the merge order?: Yes. After uploading you can drag to reorder, and the final file is merged exactly in the order you set.