Change image DPI for print and forms
Set the DPI (dots per inch) an image reports: 300 for print, 72 for screen, or whatever a form asks for. Drop a file in, enter the DPI, and download.
DPI (dots per inch) is metadata that tells printers and some government portals how large an image should print. It is not the same as pixel width×height. A 1200×1200 image can be tagged 72 DPI or 300 DPI; pixels stay the same unless you also resize.
Many form instructions say 300 DPI without explaining pixels. Supply both when the spec lists them.
Common DPI values and when to use them
- 72 DPI — web previews, email, screens
- 150 DPI — quick office prints and drafts
- 300 DPI — photo prints, visa scans, many Indian government form requirements
- 600 DPI — rare; only when the portal explicitly demands it (files get heavy fast)
DPI reference table
Forms often say 300 DPI without listing pixels. Use the table to sanity-check: a 4×6 inch print at 300 DPI needs roughly 1200×1800 pixels. If your image is smaller, resize first — changing DPI metadata alone will not add detail.
| DPI | Typical use | Pixel hint (4×6 in print) |
|---|---|---|
| 72 | Web, email, screen preview | 288 × 432 px at 4×6 |
| 96 | Windows default display | 384 × 576 px at 4×6 |
| 150 | Office draft prints | 600 × 900 px at 4×6 |
| 300 | Photo prints, many visa/passport scans | 1200 × 1800 px at 4×6 |
| 600 | Rare archival / specialty portals | 2400 × 3600 px at 4×6 |
DPI vs resize vs compress
Changing DPI alone rarely fixes a file that is too large in KB. Portals measure bytes and pixels, not just DPI tags.
Typical fix for rejected uploads: resize to required pixels, set DPI if listed, then compress to the KB maximum — all in one FilezyAI pass.
Real scenarios
- Passport or visa scan instructions mentioning 300 DPI
- Print shop asking for 150+ DPI on an image you only have as 72 DPI web art
- University form validating DPI metadata separately from file size
Passport and visa photo: DPI plus pixels plus KB
Indian passport online uploads often want 413×531 px, JPG, and a KB cap under 200. US DS-160 wants 600×600 px. DPI tags matter only when the form mentions them — always satisfy pixel and byte limits first.
Enable resize, DPI, and compress together on FilezyAI instead of guessing in three separate tools.
Why FilezyAI runs multiple steps together
Most free converters handle one job per visit: format change, or a vague quality slider, or a crop tool on another tab. Portals rarely ask for just one of those — they publish a checklist (JPG, under 200 KB, 600×600 px, named photo.jpg). FilezyAI applies every toggle you enable in a single server job.
Uploads are removed automatically two hours later. No account is required on the free tier. Pro removes ads and raises file-size limits.
- Set min/max KB instead of guessing compression percentage
- Chain convert, compress, resize, rename, and metadata removal before one download
- Twelve input formats including HEIC, PDF, and Office documents
- AI mode when you prefer plain-English instructions over manual toggles
How to use this tool
- Upload a supported image.
- Enter the target DPI from your form or print spec.
- Enable resize if pixel width×height is also required.
- Enable compress if a KB cap is listed.
- Apply and download, then verify in file properties.