Add arrows and text to a screenshot, straight in your browser.
You have a screenshot and it needs an arrow on it. Probably a label too. Paste it into Arrowbox, drag the arrow, type the text, export. That is the whole job — nothing gets uploaded, there is no account to make, and there is no watermark on the result.
The name is not an accident. Arrows are Arrowbox's headline tool: eight head and tail styles, double-headed when you are showing a relationship rather than a direction, and callouts — a text box joined to an arrowhead by an elbow leader, so the label and its arrow move as one object.
Everything happens in your browser. After the page loads, Arrowbox makes zero network calls — enforced by its security policy, not just promised — so your screenshot never leaves your machine. That matters when it shows a customer record, an internal admin panel, or anything else you would rather not send to someone's server.
Open Arrowbox — free, no sign-upRuns in your browser. Nothing is uploaded — zero network calls, enforced by the page’s Content-Security-Policy. Desktop browsers work best.
How it works
- Paste your screenshotPress Ctrl+V and it lands on the board. Drag-and-drop or the Open button work too, and you can put several images on one board.
- Draw the arrowPick the Arrow tool and drag towards the thing you are pointing at. Choose one of eight head and tail styles, or put a head on both ends.
- Add the textUse a callout when the label needs its own arrow — text box, elbow leader and arrowhead in one piece. Or drop a plain text box; it auto-fits as you type, with per-word bold, italic, size, colour and font.
- ExportExport as PNG (transparency kept), JPEG or PDF — an untouched image comes out at its exact original size. Or hit Copy to put the flattened result straight on your clipboard.
Why Arrowbox
- Eight arrowhead and tail styles, plus double-headed arrows — pick the one that reads at a glance.
- Callouts weld the text to the arrow: move the box and the elbow leader follows.
- Zero network calls after the page loads, enforced by an automated build gate. Nothing is uploaded.
- No account, no sign-up, no watermark, no telemetry.
- Exports PNG, JPEG or PDF at the exact original size; Copy puts a flattened image on the clipboard.
- Free, donation-supported, made by one developer.
Questions
How do I draw an arrow on an image without installing anything?
Open arrowbox.app in a desktop browser, paste the image with Ctrl+V or drag it in, pick the Arrow tool and drag. Choose from eight head and tail styles, then export as PNG, JPEG or PDF. There is nothing to install and no account to create.
Can I add text to a screenshot online without uploading it anywhere?
Yes. Arrowbox runs entirely in your browser — after the page loads it makes zero network calls, enforced by the page's security policy. Your screenshot never leaves your machine. Text boxes auto-fit as you type, with per-word bold, italic, size, colour and font.
Can I make a double-headed arrow or change the arrowhead style?
Yes. Arrows come with eight head and tail styles, and you can put a head on both ends for double-headed. If the arrow needs a label attached, use a callout instead: a text box joined to an elbow leader with an arrowhead, so both move together.
What is the best way to label several things in one screenshot?
Use callouts for text-plus-arrow labels, and numbered step stamps when order matters — they renumber themselves automatically if you rearrange them, and can stamp a numbered badge on each selected object. Everything exports flattened into a single PNG, JPEG or PDF.