Image DPI Checker
Read the DPI stored in a JPG or PNG image.
- Reading time:
- 4 min
- Last updated:
- Price:
- Free, no signup
Choose a file to see the result.
What the Image DPI Checker does
Inspects the pixel-density metadata in a JPG (JFIF density) or PNG (pHYs) chunk so you can confirm whether an image is print-ready before you send it to a printer. The Image DPI Checker works with any image your browser can decode — JPG, PNG, WebP, GIF, SVG — and processes the file entirely locally using the canvas and File APIs.
Because nothing leaves your device, you can safely inspect and convert client work, product photos, screenshots and internal design assets without worrying about a third-party service logging the file.
Why the Image DPI Checker is useful
The output is generated on demand, so you can experiment with different formats, quality settings and dimensions until the result matches what you need for the web, print or app.
Pair the Image DPI Checker with the Favicon Generator, SVG Optimizer and Color Palette Generator to build a browser-only image toolkit that fits in a single tab.
Also known as: image dpi checker, check dpi, png dpi, jpg dpi, free image dpi checker, online image dpi checker, image dpi checker online free.
How to use the Image DPI Checker
- 1
Choose an image
Click the file picker and select the image you want to process with the Image DPI Checker. Files stay on your device — nothing is uploaded.
- 2
See the result instantly
The output — analysis, converted image or preview — appears immediately after the file loads.
- 3
Copy or download
Copy the result to your clipboard, or Download the converted file/report for later use.
Key features
- 100% free with no signup, watermarks or usage limits
- Runs entirely in your browser — your text never leaves the device
- Live results update on every keystroke
- One-click Copy, Download .txt and Clear buttons
- Works on mobile, tablet and desktop with dark and light mode
- Optimised for speed and Core Web Vitals — the page loads in under a second
Benefits
- Inspect and convert images without uploading them anywhere
- Get consistent, browser-native output that matches what production systems produce
- Prepare assets — favicons, resized images, compressed variants — in seconds
Real-life use cases
Preparing web assets
Resizing, converting and compressing an image before upload keeps pages fast and Core Web Vitals healthy.
Checking a file before you send it
Dimensions, DPI and format tell you immediately whether an asset meets a print or platform requirement.
Working with confidential images
Local processing means screenshots, contracts and unreleased product shots never leave your machine.
Tips for the best results
- Resize to the size you actually display before compressing for the best quality-to-weight ratio.
- Prefer modern formats such as WebP for photographs on the web.
- Keep the original file — conversions and compression are lossy.
Conclusion
The Image DPI Checker does one job properly: read the dpi stored in a jpg or png image. It is free, needs no account, runs entirely in your browser and gives the same answer every time. Bookmark it, keep it open in a tab while you work, and pair it with the related tools below to build a fast workflow you never have to install.
Frequently asked questions
What DPI is print-ready?
- 300 DPI is the standard for photos and magazines; 150 DPI is acceptable for large-format prints viewed from a distance.
Is the Image DPI Checker really free?
- Yes — every feature of the Image DPI Checker is free with no signup, no watermarks and no daily limits. Text Tools Hub is funded by lightweight display ads.
Do you store the text I paste?
- No. The Image DPI Checker runs entirely inside your browser. Nothing is uploaded, logged or stored on our servers.
Can I use it on my phone?
- Yes. The Image DPI Checker is fully responsive with dark and light mode, so it works comfortably on any modern phone, tablet or laptop.
Does it work offline?
- Once the page has loaded, the tool keeps working even if your connection drops, because all processing happens in the browser.
Can I use the Image DPI Checker for commercial writing?
- Absolutely. There are no licensing restrictions on the text you process — use the results in books, blogs, apps, contracts or client work.
Are there any usage limits?
- No hard limits — the Image DPI Checker handles anything from a tweet to a full novel. Very large inputs may briefly slow older devices while your browser processes them.
Do I need to install anything to use the Image DPI Checker?
- No. The Image DPI Checker is a web page. Open it in any modern browser on any device and it is ready — there is nothing to download, install or update.
Is there a limit on how much I can process?
- There is no artificial limit. Very large inputs depend on your device's memory, since all the work happens locally rather than on a server.
Can I use the results commercially?
- Yes. Anything you produce with the Image DPI Checker is yours to use in client work, books, apps or commercial publishing with no attribution required.
Related tools you may need
- Image Aspect Ratio Calculator — Compute the aspect ratio from width x height.
- Image File Size Calculator — Estimate uncompressed image file size from dimensions.
- SVG Viewer — Preview and inspect any SVG markup.
- SVG Optimizer — Strip comments, metadata and whitespace from SVG.
Keep exploring
Browse the full tools directory, filter by category, or read guides on the Text Tools Hub blog.