12 free 3D tools in one page - image-to-3D, normal maps, remesh, reduce; file tools stay local
SetDPI
Change image DPI losslessly, right in your browser — no re-encoding, no uploads, a lifesaver for print and paper submissions
Content updated · 2026-09-10
What is it · 它是什么
What is SetDPI?
SetDPI changes image DPI directly in the browser: it only rewrites metadata (JFIF/EXIF for JPG, the pHYs chunk for PNG) without re-encoding pixels, so quality is untouched. It handles batches of up to 50 files and includes a pixel/print-size calculator plus a reference table of common DPI requirements. Files never leave your machine and the page works offline once loaded — when AI-generated 72 DPI images get rejected by print shops or a journal demands 300 DPI, drop them in and it's solved in seconds.
How to use · 怎么用
How to use SetDPI
- Drag images onto the page (or click upload) and pick a target DPI (300/600/custom).
- For batches, drop multiple files at once — up to 50.
- Unsure about the number? Check the built-in DPI reference table and calculator.
Key features · 核心特点
Key features of SetDPI
- Metadata-only rewrite, zero quality loss
- Fully local, no uploads, works offline
- Batch support up to 50 files
- Built-in size calculator and DPI requirements table
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