Create ZIP archives in your browser. Free, private, runs in your browser.
100% private — your files and text never leave your browser. All processing happens locally on your device.
Choose files
or drop them here
ZIP Compressor reads selected files in the browser and writes a ZIP archive locally with JSZip. It is useful for bundling images, CSV parts, documents, or generated tool outputs before sharing.
ZIP compression works best on text-like files. Photos, videos, PDFs, and existing archives are often already compressed, so the ZIP may mostly package them rather than shrink them.
When the browser provides relative folder paths, Convertful can preserve them. Paths are normalized and filenames are sanitized before writing the archive.
No. Files are read by the browser and written into a ZIP in memory. Convertful does not receive the file contents.
If your browser provides relative folder paths, Convertful can preserve them. Standard file selection may only provide filenames.
Images, videos, PDFs, and existing archives are often already compressed, so ZIP may mostly package them rather than shrink them.
The tool caps file count and total selected size to avoid freezing or exhausting browser memory.
Yes. Paths are normalized before writing to the archive so the output avoids absolute or unsafe path names.