What EditorZPL gets right
It has the longest tool list of any free option in the category: an editor with live preview, a validator, a formatter, barcode and QR generators, a DPI calculator, and converters in several directions — including EPL2, DPL and TSPL into ZPL, which we do not do at all.
And its position on privacy is the same as ours: “all processing happens on your device”, in their own words. Anyone ruling out converters because of the upload does not have to rule out this one.
Where the two diverge
EditorZPL is built for the person writing and debugging ZPL — one label at a time, with a validator beside it. Our main case is the opposite: somebody who has a hundred labels in an archive and wants one PDF, without opening them one by one.
So the practical difference is the batch. Drop a sealed .zip or a whole folder here and every file inside is read in order, archives nested in archives included, into a single PDF.
Where the files come from
Both tools open a .zpl file. Only one of them writes about where that file came from — a carrier API returning base64, a ShipStation account switched to ZPL by support, a WMS print program — and what to do when it will not open.
That is the half that decides whether you get the label out of the printer, and it is the part we keep writing.
When EditorZPL is the right answer
If you are authoring a ZPL template from scratch, their editor, validator and formatter beat our code panel, which is built for reading with the occasional edit.
And if your file is EPL2, DPL or TSPL rather than ZPL, their converters handle it and ours do not.