Image tools
Write 72, 100, 200 or 300 DPI into a JPG or PNG header. Pixel data is never re-encoded, so quality cannot change.
Drop in a file, pick a format, download. No account needed to start.
Drag files here, or click to select
- Files never leave your device
- Free and unlimited
- No sign-up, no watermark
Frequently asked questions
Is this tool free?
Yes — free and unlimited. No account, no watermark, no per-file charge.
Which formats are supported?
Each tool lists the formats it accepts under the drop area. Image tools take JPG, PNG and WebP; PDF tools take PDF files, while JPG to PDF accepts JPG, PNG, WebP and HEIC.
Can I process several files at once?
Image compression, resizing and JPG to PDF take up to 50 files per batch and download together as a ZIP. Splitting, deleting pages, merging and extracting work on the files shown in the panel — one PDF at a time where the tool is single-document.
Are my files uploaded anywhere?
No. Every step runs in your browser, so files never leave your device — you can verify it in the network panel.
Will compression reduce quality?
Compression re-encodes JPG and WebP at the quality you choose, so some loss is expected below 100%; PNG stays lossless. Merged, split and page-deleted PDFs keep their original content, and PDF tools that render or re-encode images say so in the result panel.
Does changing DPI make the image sharper?
No. DPI is metadata that tells a printer how large to print the pixels — it never adds detail. Print size is pixels ÷ DPI, so 1200px at 300 DPI is 4 inches wide. We say this plainly because most DPI tools do not.