Image to Sketch
Turn photos into pencil-style sketches in your browser.
The sketch is computed on a canvas in your browser. The photo never leaves your device.
How to use it
- Choose an image up to 10MB - JPEG, PNG or WebP.
- Drag the sketch radius slider - small values keep fine lines, large values produce softer shading.
- The preview recomputes as you drag (a short pause on large photos is normal).
- Click Download to save the sketch as a PNG.
Common use cases
- Portrait keepsakes - turn a photo into a line drawing for a card or a poster.
- Storyboards - flatten reference photos into sketches that read as drawings.
- Website placeholders - use a sketched version while final artwork is pending.
Why it stays private
Every step - grayscale, inversion, blur and blending - runs on a canvas element inside your browser tab. The photo is read through a local object URL and never sent anywhere.
FAQ
Q: How does the sketch effect work? A: The image is converted to grayscale, inverted, blurred with a convolution at your chosen radius, then blended back with a color dodge formula - the same approach pencil filter apps use.
Q: Why is my sketch almost entirely white? A: A large radius on a low-contrast photo pushes everything toward white. Lower the radius, or start from a photo with clearer edges and shadows.
Q: Can I get the lines without the white paper? A: The output is white paper with dark lines, saved as PNG. Place it on any background you like in your editor.
Your data stays on this device
Image to Sketch runs 100% locally. Everything you paste or drop is processed by your own browser and never transmitted. Nothing is stored on our servers — close the tab and it is gone.
Nothing you type is sent to a server, logged, or used for analytics. The page works even with your network disconnected after first load.