Free
SVG
For Inkscape, Illustrator, xTool Creative Space, the Glowforge app and LightBurn itself. Layers become groups in LightBurn's colours, at real size in millimetres.
LightBurn file viewer · nothing uploaded
See inside any LightBurn file.
Open a .lbrn2 or .lbrn project to see the design, every layer's speed and power, its real size and how long it might take. Export an SVG for other laser software. No LightBurn licence needed, and the file never leaves this computer.
or drop a .lbrn2 or .lbrn anywhere on the page
That file couldn't be opened
Drop to open. It stays on this computer.
Layers and settings
In the order LightBurn runs them. Untick a layer to hide it here and leave it out of exports.
| Show | Layer | Mode | Speed | Power | Passes | Interval | Shapes | Path length | Time, est. |
|---|
Grey italic values aren't saved in the file. A .lbrn2 leaves out values that match LightBurn's defaults, so the documented defaults are shown (100 mm/s, 20% power, 0.1 mm interval, one pass). Speeds are stored in mm/s; hover a speed for mm/min. Times assume the head always moves at full speed, so real jobs take longer; see how they're worked out.
Export
Only the layers that are switched on are exported. Files are made in your browser.
Unlock
DXF
For CAD, CNC routers, cutting services and older laser software. R12 DXF, one DXF layer per LightBurn layer, millimetres, true circles. Pictures can't go in a DXF, so they're left out.
Part of the £6 unlock, coming soon.
Free
Pictures
Images embedded in the project, and the preview LightBurn saved with it, can be saved as PNG files on their own.
This project has no embedded pictures.
Pictures in this file
Shown at their own size. The original file name is what the designer's computer called the picture.
Job sheet
One printed page for whoever runs the laser: the design, every layer's settings, sizes, and the time estimate with its assumptions. Choose Save as PDF in the print window for a file.
Type material, focus and notes straight onto the sheet before printing.
Printing the job sheet is part of the £6 unlock. The preview is free to look at.
Printing the job sheet is part of the £6 unlock, coming soon. The preview is free to look at.
One-time unlock
DXF, batch conversion and job sheets
Viewing, inspecting and SVG export are free and stay free. The unlock adds the things that save a workshop time.
- DXF export of any project, layer by layer.
- Batch conversion: drop many .lbrn2 files, or a ZIP of them, and get one ZIP back with SVG and DXF for each, plus a CSV of every layer's settings.
- Printable job sheets with settings, sizes and time estimates.
- One payment, no account, no subscription. Your files still never leave your computer.
£6 once
Coming soon
It isn't on sale yet, so there's nothing to pay today. Everything free on this page works now.
Payment is handled by Stripe. You come back here and it unlocks in this browser.
Batch conversion
How sure is each number?
Read straight from the file
Layer names, modes, speeds, powers, passes and intervals are exactly what the file says, apart from values shown in grey italics, which the file leaves out and LightBurn fills with its defaults. Shape counts are exact.
Measured from the shapes
Sizes and path lengths are measured from the geometry, with curves followed to within a few thousandths of a millimetre. Text without a saved outline has no exact shape, so it isn't measured, and you'll see a note when that happens.
Estimated, and labelled
Times assume the head always moves at the layer's speed. Lines take length × passes ÷ speed; fills sweep each row from the first edge to the last at the line interval; images scan their whole frame. Acceleration, overscan and travel aren't counted, so real jobs take longer, sometimes a lot longer.
Why nothing is uploaded
Your designs are your stock
Bought designs and customer jobs shouldn't sit on a stranger's server. This page reads the file with code running on your own computer, and never sends it anywhere.
Locked down by design
The page's security policy only lets it connect back to this site and to Cloudflare's visit counter. The only note it sends about a file is its type and whether it opened, and your browser's network panel will show the file itself never leaves.
Works on locked-down PCs
Nothing to install and no admin rights needed. It works on a work laptop, a school computer or a Chromebook beside the laser.
Guides
Short, practical answers about LightBurn files.
- Open without LightBurnSee the design, layers, speed, power and size inside a LightBurn .lbrn2 or .lbrn file without installing LightBurn. Nothing is uploaded.
- LBRN2 to SVGTurn a LightBurn .lbrn2 or .lbrn project into an SVG in your browser. Layers become groups in LightBurn's colours, sizes stay in millimetres, and nothing is uploaded.
- LBRN2 to DXFExport a LightBurn .lbrn2 or .lbrn project as an R12 DXF in your browser: one DXF layer per LightBurn layer, millimetre units, true circles. Nothing is uploaded.
- LBRN2 for xToolGot a .lbrn2 design but use xTool Creative Space? Convert it to SVG in your browser, keep the layer colours, and read the original speed and power settings.
- LBRN2 for GlowforgeThe Glowforge app takes SVG, not LightBurn files. Convert a .lbrn2 to SVG in your browser, with each LightBurn layer in its own colour so it becomes its own print step.
- Layers, speed and powerA plain guide to what a .lbrn2 file stores: layers and modes, speed in mm/s, power, passes, line interval, run order, embedded images and notes, and what it leaves out.
- .lbrn vs .lbrn2LightBurn saves projects as .lbrn2 by default and .lbrn as its legacy format. What differs inside, which to use, and how to open either without LightBurn.
- Layer coloursAll 32 LightBurn layer colours, C00 to C29 plus tool layers T1 and T2, with hex and RGB values, so your SVG and DXF designs land on the right layers.
- The .lbrn2 formatHow a LightBurn .lbrn2 project is structured: the XML root, cut settings, shape types, the XForm matrix, the VertList and PrimList path encoding, and embedded bitmaps.