Convert PNG or JPG images to PLT (HPGL) vector files for laser engraving.
If you engrave with a fibre laser, you already know the bottleneck: your label software spits out PNG sheets, but EzCad2 wants PLT (HPGL) vectors — and converting them one at a time through a website that caps you at ten a day is no way to run a batch of hundreds. This tool converts PNG/JPG straight to PLT in your browser, as many at once as you like, and hands you a ZIP. There is no per-conversion cost because nothing leaves your machine, so there is no limit.
Drag & drop your file here
or click to browse
PNG, JPG, BMP or GIF · Max 50MB
Drop in one image or a whole folder's worth of PNG/JPG sheets at once.
Check the live preview and nudge the threshold slider until the artwork traces cleanly — dark pixels become engraved outlines, light pixels are dropped.
Click convert. Each image is traced to closed vector contours, auto-cropped to its content, Y-flipped for a bottom-left origin, and scaled to match your existing files.
Download each PLT (named to match its source) or grab the whole batch as a ZIP, then import into EzCad2 and set the physical size there.
PLT/HPGL is a vector outline format, not a picture
A .plt file describes pen movements — pen-up to jump, pen-down to draw a line — that trace the outlines of your artwork. It is what plotters and laser engravers read. This tool emits only those move/draw commands (no curves, since the format has none): every shape becomes closed straight-line contours.
Outlines only — your laser software fills them
The PLT contains outlines, not solid fills. EzCad2 (and similar) apply the hatching/fill on import, which is why the file is small and clean. Contours are closed so the fill knows what is inside.
Tracing quality depends on a clean, high-contrast source
The converter traces the boundary between dark and light pixels. Crisp black-on-white artwork traces perfectly; a low-contrast, blurry, or heavily anti-aliased scan will trace fuzzy edges. Use the threshold slider and the preview to get a clean black/white image before converting a batch.
Check QR codes and barcodes before a full run
QR and barcode modules are square, and the tracer keeps them square — but always convert one sheet, engrave or preview it, and scan the code before committing hundreds. A source image that is too small or too soft can lose module definition regardless of the converter.
Physical size is set on import, not here
The PLT preserves your artwork's aspect ratio exactly and scales the longest side to a standard size, but the real millimetre dimensions are set in EzCad2 (or your engraver software) when you import. Absolute scale in the file is not what determines engraved size.
Everything stays in your browser
Images are read and converted locally with JavaScript. Nothing is uploaded, so there is no per-file cost and no daily limit — convert as many as you need.
Private by default
Client-side tools never upload your files. Server-side tools delete them immediately after processing.
No account needed
Just upload and go. No email, no password, no account — ever.
Works on any device
Fully browser-based. Works on desktop, tablet, and mobile with nothing to install.
A PLT file is plain-text HPGL (Hewlett-Packard Graphics Language) — a vector format of pen-up/pen-down move commands used by plotters and laser engravers. Software like EzCad2 imports PLT to drive fibre and CO2 lasers. This tool outputs PLT that such software reads directly.
Convert PNG, JPG, BMP, or GIF images into PLT (HPGL) vector outline files for fibre laser engravers and plotters — the format EzCad2 and similar software import. Batch-convert hundreds of files at once, adjust the black/white threshold with a live preview, and download individually or as a ZIP. Everything runs in your browser: no signup, no upload, no per-conversion limit.