Skip to content
What are you looking for?

Draw Line on Image

Free No Limits Instant Download Private and Works Offline!

Drop a photo here, click to add, or paste

ⓘ Important Points to Consider
  • If you add several large PNG files, it can crash this page. If that happens, refresh the page and try fewer files.
  • This is not a limit we set. We process everything on your own device, and your browser only lets a page use a limited amount of memory, which large PNG files can use up.
  • Stay on this tab while this tool works on several files. If you switch tabs, your browser may slow down or pause this page to save battery and memory, and the work may stop until you come back.
°

About this tool

Draw Line on Image

Free No Limits Instant Download Private and Works Offline!

100% client-side processing, so zero server uploads ever. Drag across your photo to draw a straight line. Make it solid, dashed or dotted, in any colour and thickness.

  1. Keyboard Shortcuts

    • Ctrl/Cmd + Z — Undo
    • Ctrl/Cmd + Shift + Z or Ctrl/Cmd + Y — Redo
    • Ctrl/Cmd + C, then Ctrl/Cmd + V — Copy the selected mark and paste it again (as often as you like, also on another photo)
    • Ctrl/Cmd + D — Duplicate the selected mark
    • Delete or Backspace — Delete the selected mark
    • Hold Shift while dragging on a shape — Draw a new one there instead of moving the shape under the pointer
    • Hold Shift while dragging the end of a line or arrow — Snap its angle to steps of 15°
    • ← ↑ → ↓ — Nudge the selected mark (hold Shift for bigger steps)
    • Esc — Deselect

    Shortcuts work once a photo is loaded and you're not typing into a text or number field.

  2. 00

    What's great about our draw line on image

    • Free
    • Super fast
    • No photo uploads
    • No photo downloads from the server
    • Works offline
    • No daily limit
    • No ads
    • No watermarks
    • No downgrade in photo quality
    • Remembers your last settings
  3. 01

    Choose a photo

    Pick one or several images from your device. They load straight into your browser's memory — they are never sent anywhere.

  4. 02

    Draw the line

    Press where it should start, drag, and let go where it should end.

  5. 03

    Style it

    Choose colour, thickness and style. Click a line to select it, then drag its round ends to change it.

  6. 04

    Download

    Click Download Photo with Lines, choose the file type and size, and the finished file is saved to your device.

  7. 05

    Loved it?

    • If you're on computer, bookmark this page to your browser.
    • If you're on mobile, add it to your home screen for one-tap access and offline use.
      • Android: Visit this page in Google Chrome > tap three-dot icon (⋮) at top > Install and create shortcut.
      • iPhone and iPad: Visit this page in Safari > tap menu icon in address bar > Share > Add to Home Screen.

How It Works: 100% Browser-Based Draw Line on Image

Our draw line on image runs entirely inside your web browser using HTML5 Canvas and client-side JavaScript. Unlike conventional image editors that force you to upload files to a remote server, it processes every pixel locally on your device.

This means zero upload delays, instant results, and complete offline availability. Whether you are using a laptop, tablet, or smartphone, you can work on your images without wasting mobile data or waiting for cloud processing. Once the page is loaded, you can even disconnect your internet and carry on.

Why Privacy-First Image Editing Matters

Most free online photo tools silently send your personal images, screenshots, and confidential graphics to external cloud servers. This creates unnecessary security risks, potential data leaks, and privacy concerns for sensitive photos.

We believe your images belong to you. By operating 100% offline and client-side, your photos are never uploaded, stored, or processed on any server. Your personal data never leaves your device's memory.

How To: Draw Line on Image (Step-by-Step)

  1. Choose a photo: Pick one or several images from your device. They load straight into your browser's memory — they are never sent anywhere.
  2. Draw the line: Press where it should start, drag, and let go where it should end.
  3. Style it: Choose colour, thickness and style. Click a line to select it, then drag its round ends to change it.
  4. Download: Click Download Photo with Lines, choose the file type and size, and the finished file is saved to your device.

Popular Uses for Draw Line on Image

  • Measurements: Mark a distance or an alignment on a photo.
  • Diagrams: Join two parts of a picture.
  • Underlines: Underline a word in a screenshot.

About Remember Adjustments For Future Sessions

  • Off by default: nothing is remembered unless you tick “Remember Adjustments For Future” under the Undo and Redo buttons.
  • What it remembers: once ticked, your option choices and download settings are reused the next time you add a photo or visit this page.
  • Your privacy: these settings are saved in your own browser and never on our server.
  • Easy to clear: untick the box at any time to erase the saved settings.

Frequently asked questions

  • Are my photos saved or stored on any server? No. Your photos are never uploaded to any server. Everything happens locally inside your device's web browser.
  • Does this tool work offline? Yes. Once you open the page, it works completely offline. You can turn off Wi-Fi or mobile data and still edit and download photos.
  • Will this lower the quality of my photo? No. The tool keeps your photo's resolution and saves it at full quality. You choose the file type and size when you download.