Image generators and utilities
The tools that are not about making a picture smaller or a different shape: what is stored inside the file, what a form or a platform wants, and a few things made from nothing.
The shelf for everything else
This is the shelf for jobs that do not fit under compress, convert or edit. Some of them look inside a file: the date, camera and location a photo carries, or the resolution it claims to have. Some make a file to somebody else's rule, such as a passport office, an exam board or a social network. And some make something new: a set of favicons, a signature, a page of handwriting.
Viewing, removing or editing EXIF data never redraws the picture. The notes in the file are rewritten and the image data is copied through as it was, so nothing is lost however many times you do it. Changing the DPI works the same way wherever the file allows it.
The pages made for a particular form are not official, and none of them can promise that a file will be accepted. Each says which notice its figures come from, and every figure can be changed, because the rules differ from one notice to the next.
What is stored in the file
Read a photo's metadata, remove it or change it, check the resolution a file claims, and read a colour off a picture.
EXIF Viewer
See what a photo says about itself: camera, lens, exposure, date taken and GPS coordinates.
EXIF Remover
Strip the camera details, timestamps and GPS coordinates out of a photo before you share it.
EXIF Editor
Change the date, the author, the copyright line, the camera name or the location stored inside a JPG.
Image DPI Checker
Find out what resolution a file really records before you send it to a printer or a form.
Image DPI Converter
A form or a printer wants 300 DPI and your file says 72.
Image Dimension Calculator
Work out the matching height for a given width, the print size at 300 DPI, or the scale factor between tw…
Image Colour Picker
Open a picture and click any point to get its colour as a HEX, RGB and HSL code, ready to copy.
Photos and signatures for forms
A photo or a signature of an exact size, between two file sizes. The same pages, with their sizes side by side, are on exam and form photo tools.
Passport Photo Cropper
Real millimetre sizes at 300 DPI (35 × 45 mm, 2 × 2 in and more) plus an optional 6 × 4 inch print sheet…
SSC Photo & Signature Resizer
SSC application forms take a signature as a JPG of 10 to 20 KB, about 6 cm wide and 2 cm high.
UPSC Photo & Signature Resizer
The UPSC application wants a JPG photo and a JPG signature, each inside a pixel band and a file-size range.
PSC Photo Resizer
Kerala PSC's one-time registration takes a photo 150 pixels wide and 200 high, under 30 KB, with your nam…
PAN Card Photo & Signature Resizer
An online PAN application asks for a small colour photo under 20 KB and a signature under 10 KB, both sca…
Signature Resizer
Online forms want a signature as a small JPG: so many pixels wide and high, and between two file sizes.
Resize Signature to 6×2 cm
Six centimetres wide and two high is a long, shallow strip: three times as wide as it is tall.
Resize Signature to 50×20 mm
Fifty by twenty millimetres is the signature box on railway recruitment forms.
Merge Photo and Signature
Combine a passport-style photo and a signature in one file, the signature under the photo or beside it, a…
For websites and social media
Icons for a site, pictures at the sizes each platform shows them, and images written out as text for a stylesheet or an email.
Favicon Generator
One ZIP with a real multi-resolution .ico, every PNG size modern browsers ask for, and the markup to past…
Social Media Image Resizer
Tick the platforms you post to, and get every correctly-sized image back in one ZIP.
Instagram Grid Maker
Cut one picture into a set of posts that rebuild it on your profile.
Base64 Image Encoder
Get a data URI, CSS rule, <img> tag or Markdown, and optionally re-compress the image first so the string…
Base64 Image Decoder
Paste a data URI or raw Base64 string to see the image and download the file.
Made from nothing
No picture to add: draw or type, and download the result.
Guides that go with these tools
Longer articles on the decisions behind them.
How to remove location from a photo
A phone writes where a photo was taken into the file, to within a few metres. Here is how to see what yours hold, how to take it out, and where a second copy can hide.
Read the guide Fundamentals · 6 min readWhat DPI means for an image
DPI is the most misunderstood number attached to a picture. It adds no detail and removes none. It is an instruction about printing, and one line of arithmetic explains everything a form or a print shop means by it.
Read the guide Reference · 10 min readPassport photo sizes: a reference guide
Photo requirements are specified in millimetres, judged by a human, and change without notice. This is what the numbers mean, how they convert to pixels, and why photos get rejected.
Read the guide Reference · 8 min readSocial media image sizes
Every platform crops uploads to its own ratio. Pre-sizing means you decide what stays in frame instead of an algorithm deciding for you.
Read the guideFrequently asked questions
What is EXIF data, and should I remove it?
It is a block of notes a camera or phone writes into a photo: the date and time, the make and model, the exposure settings and often the place it was taken. Remove it before posting a photo publicly if any of that is private. The EXIF Viewer shows what a file holds, and the EXIF Remover takes it out without touching the picture.
Does changing the DPI change the picture?
No. DPI is a number stored in the file that says how large the picture should be printed. Changing it leaves every pixel as it was. To change how many pixels the picture has, resize it.
Are the form pages official?
No. They are made from the notices the issuing bodies publish, and each says which notice. They cannot say whether a file will be accepted, which also depends on the photo itself. Check the figures against the notice you are applying under.
Is a signature made here a digital signature?
No. The Signature Generator makes a picture of a signature, for placing on a document. It carries no proof of who signed or that the document is unchanged, and it is not a legal electronic signature.