File Merger
Combine multiple files into one. Merge text files, images, or create a PDF from images. No server uploads, 100% private.
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Frequently Asked Questions
What file types can I merge?
Text files (.txt, .csv, .json), and images (PNG, JPG, WebP). Text files are concatenated. Images are combined.
Are my files sent to a server?
No. All merging happens entirely in your browser using JavaScript. Your files never leave your device — verify in DevTools Network tab.
How many files can I merge at once?
Limited by browser memory and total file size. Most modern browsers can merge 10-100+ files depending on their size.
Can I merge different file types together?
Not in a single operation. Select files of the same type for best results — either all text files or all images.
Is original content preserved?
Yes, content is preserved exactly. For text files, files are concatenated in the order selected. For images, they are combined vertically.