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Create a QR code for a link, Wi-Fi, WhatsApp, contact and more, or read one from a photo.
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- Works on any device
Fill in the details to see your QR code.
PNG for phones, chats and websites. SVG and PDF stay sharp at any size, which is best for printing. Tip: point your phone camera at the preview to test it.
3. Style (optional): colors, dots, logo
Choose a photo or screenshot or drag it here
Works with photos of printed codes, screenshots and image files.
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Histogram and auto levels
See a photo's histogram and fix dull, dark or tinted pictures with auto levels.
- Free
- No sign-up
- Works on any device
About Histogram and auto levels
A histogram plots how many pixels sit at each brightness level, from black on the left to white on the right. A pile at one end means a dark or washed-out photo. Auto levels stretches each channel to fill the range, removing dullness and colour casts.
How to use Histogram and auto levels
- Add a photo to see its histogram drawn below or beside it.
- Look at where the graph sits: bunched left is dark, bunched right is bright.
- Apply auto levels and compare before and after, then save the corrected photo.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
What does a good histogram look like?
There is no single ideal shape, but a photo usually looks richest when the data reaches both ends without being cut off. Bars crushed against the edges mean lost shadow or highlight detail.
What does auto levels actually change in my photo?
It stretches the tones so the darkest pixels become close to black and the brightest close to white. This adds contrast to flat pictures and can also reduce a colour tint when applied per channel.
Why can auto levels make some photos look worse?
If a photo is meant to be dark or foggy, stretching the tones removes that mood. Auto levels also cannot add detail that was never captured, so check the preview and skip it when the original already looks right.
Is Histogram and auto levels free?
Yes. Histogram and auto levels on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.