The short answer
Why use Histogram Viewer?
File properties often explain why an image prints poorly, rotates unexpectedly, or reveals more information than intended. Reading the file first prevents guesswork.
Histogram Viewer focuses on plotting the tonal distribution of an image. The inspector reports what the file contains and says when a tag is absent. It does not invent DPI, GPS, camera, or shutter data that was never stored.
The selected file stays in this browser tab and is released when you leave the page. Metadata fields are optional and can be removed by messaging apps or editors. A missing value is different from a zero value.
What Histogram Viewer does
Open the source file
Drop, choose, or paste a supported file into Histogram Viewer. Plotting the tonal distribution of an image. The source stays on your device; we work on a copy.
Read what is actually there
Histogram Viewer is for plotting the tonal distribution of an image. The preview is the place to decide if the setting went too far. The original file is not overwritten.
Useful controls
Main controls: File selection and read-only result details. Working limit: 50 MB and 50 megapixels per image. Watch the preview at full size before you save. A current desktop browser usually has more memory than a phone.
Leave with the facts
Export is on-screen dimensions, metadata, colors, or extracted previews depending on the tool. The download is a new file. Keep the original until you have opened the copy once.
Where Histogram Viewer fits
These are ordinary jobs where the focused controls save time. They also show where a full editor or a manual review may still be the better choice.
Before publishing
Check dimensions and metadata before an image leaves your device.
Troubleshooting
Use Histogram Viewer to explain a print, orientation, or file-size problem.
Privacy review
Look for GPS or camera details before sharing a photograph publicly.
Start to finish
How to use Histogram Viewer
- 01Choose, drop, or paste a supported file.
- 02Adjust the histogram viewer controls and check the preview at full size.
- 03Download the finished copy and open it once before using it elsewhere.
What to expect from Histogram Viewer
This table covers the parts that matter before you begin: what goes in, which controls do the work, what comes out, and where the browser draws a hard line.
| Check | What it means here |
|---|---|
| Supported input | JPEG, PNG, WebP, GIF, BMP, SVG and browser-supported AVIF images |
| Main controls | File selection and read-only result details |
| Output | On-screen dimensions, metadata, colors, or extracted previews depending on the tool |
| Working limit | 50 MB and 50 megapixels per image |
| Privacy | Files and entered values stay in this tab. Filenames, pixels, metadata, OCR text, QR contents, locations, and passwords are not sent to analytics. |
Before you export
- Inspect the original camera file when possible.
- Do not assume a missing DPI tag changes the actual pixel dimensions.
- Remove GPS metadata before public sharing when location is sensitive.
- Compare reported tags with the camera model because manufacturers store some fields differently.
Frequently asked questions
If you cannot find what you are looking for, write us a message and we will get back to you.
What should I check before saving with Histogram Viewer?
Does my file get uploaded?
Can I use Histogram Viewer on a phone?
Will Histogram Viewer overwrite my original file?
Why might the Histogram Viewer result look different in another app?
Is Histogram Viewer free to use?
How does Histogram Viewer work?
What can I put into Histogram Viewer?
How do I save the result from Histogram Viewer?
Why did Histogram Viewer fail or look wrong?
Will Histogram Viewer keep a copy of my work?
Related tools
More in Image Information.
Continue the workflow
These tools handle common next steps after histogram viewer.