Skip to content
OpenToolVault

Doka Photo Editor

Easy photo editor. Crop, rotate, flip, filter, resize, and annotate.

Not yet verified
Demo online
MIT

Open the official app on pqina.nl

This tool is hosted by its maintainers. Click below to open pqina.nl in a new tab — it's their official demo.

Launch tool View source
Browse image & tools tools →

What's next with Doka Photo Editor?

Choose how you want to get started.

Use it free

Open the official tool or demo — no account needed.

Free

Self-host it

Run the open-source version on your own infrastructure.

Open

What is Doka Photo Editor?

Doka Photo Editor is an open-source, client-side JavaScript library designed to embed interactive photo manipulation tools directly into web applications. It solves the issue of requiring users to manually resize or edit media before uploading, while eliminating the need for expensive backend image processing servers to perform routine tasks like cropping or rotation. E-commerce platforms, content management systems (CMS), and user profile management modules routinely implement Doka to standardize user-submitted media. The library accepts raw HTML5 File objects, Blob data, or public image URLs (such as https://example.com/photo.jpg) as input. It renders these inputs into an interactive canvas interface, allowing users to modify media visually. The output produced is a standardized image format—such as JPEG, PNG, or WebP—resized to target dimensions like 300x300 pixels or cropped to fixed aspect ratios before form submission. First, it offers precision cropping with enforced aspect ratios, such as 1:1 for social profile pictures or 16:9 for video thumbnails. Second, it includes geometric controls like non-destructive 90-degree rotations and horizontal or vertical flipping executed through standard scale inversion operations. Third, it provides linear color matrix adjustments, allowing users to tweak brightness, contrast, saturation, and apply predefined filter presets. Fourth, it features a vector annotation layer that enables adding text, geometric shapes, and freehand line markings directly over the raster image context. Compared to desktop software like GIMP or headless backend image engines like Sharp (which runs on Node.js runtime environments), Doka operates inside the user's browser runtime. This shift provides instant UI feedback without network round-trips.

How it works

Doka Photo Editor is an open-source, client-side JavaScript library designed to embed interactive photo manipulation tools directly into web applications. It solves the issue of requiring users to manually resize or edit media before uploading, while eliminating the need for expensive backend image

How to use it

  1. 1Use the Doka Photo Editor tool.
  2. 2Use the Doka Photo Editor tool.
  3. 3Use the Doka Photo Editor tool.
  4. 4Use the Doka Photo Editor tool.

What it can do

  • Photo Management

Use cases

Assumptions and limitations

Assumptions

  • source: https://github.com/doka-photo
  • license: Open source
  • privacy: Opens an external demo

Limitations

  • External demo — opens a third-party website that you do not control.
  • License status not stated — verify usage terms before commercial use.
  • Relies on an external source (github.com); availability depends on that service.
  • Focused on the image tools category: Easy photo editor. Crop, rotate, flip, filter, resize, and annotate..

Understanding the result

Easy photo editor. Crop, rotate, flip, filter, resize, and annotate.

Tool details

  • Clearly flagged when a network request is needed.
  • No account, no sign-up, and no tracking of your content.
  • Powered by doka-photo (MIT).
Built with
doka-photo (https://github.com/doka-photo)
License
MIT
Runs locally
No — requires a network request
Verification
Not yet verified
Input
Image
Output
Output
Open-source source & license

Built with https://github.com/doka-photo. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.

Built with
doka-photo
License
MIT
View source on GitHub

Open-source project

License: MITSource: this projectOfficial site

OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.

References

Frequently asked

What is Doka Photo Editor?

Easy photo editor. Crop, rotate, flip, filter, resize, and annotate.

Where can I find the source code?

The source is available at https://github.com/doka-photo

What license is it?

.

Is it free to use?

Yes, it is open-source and free to use.

Spotted something wrong with Doka Photo Editor, or want to maintain it? See how to help.