NASJI

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Free DXF Viewer Online

View a .dxf file in your browser — the outlines, layers and text exactly as exported — without uploading it or installing anything. Measure it, check the cut path, and edit and save if something is off.

The NASJI CAD web application with a floor plan open, showing layers and the command line

This is what opens

Your DXF in a real CAD, not a preview

  • Layers, blocks, dimensions, hatches

    ASCII or binary, any release: the file is decoded on your device and drawn as CAD geometry you can snap to and measure.

  • Check a cut file before you send it

    Open the laser or CNC export, measure a slot, confirm the units, hide a layer. If a line is wrong, fix it here and save the DXF again.

  • Nothing installed, nothing uploaded

    The page is the whole install; the file never leaves your device. Close the tab and nothing is kept.

Open a DXF now

How the online DXF viewer works

1

Choose the .dxf

Drop it here or pick it from your device. ASCII and binary DXF are both fine, from an R12 export out of a 1990s tool to a 2018 file. It stays in your browser: no upload, no account.

2

It opens in the CAD, in this tab

The text is parsed on your device and the drawing appears with its layers, colours and linetypes. A DXF that is mostly one enormous polyline — a traced logo, a map — loads on a background thread so the page stays responsive.

3

Check it, measure it, fix it

See whether the cut path is closed, whether the units came through, whether the text is where it should be. If not, this is a real CAD: edit, then save as DXF again or as DWG.

What you can do with a DXF here

DXF is the file that travels — from a CAD to a cutter, from a designer to a machine shop, from an old program to a new one. This dxf file viewer is built for the questions that come up on arrival.

See what the cutter will see

A DXF headed for a laser, plasma, CNC router or vinyl cutter is usually judged by its outlines. Zoom in on a joint and you can tell an open contour from a closed one before the machine does.

Measure in the file's units

DIST and AREA read in whatever the DXF was drawn in. If a 100 mm part measures 3.937, the export was in inches — worth knowing before you cut.

Layers as the file defines them

Cut, score and engrave layers show in their own colours and can be switched off one at a time, which is how you check that nothing sits on the wrong one.

Text, dimensions, hatches, blocks

MTEXT paragraphs, dimension blocks, solid and pattern hatches, nested block inserts, splines, ellipses and 3D polylines all render — not only the lines and arcs a basic dxf viewer draws.

Edit and save

Join a broken outline, delete a construction line, move text off a cut path, add a tab. Save as DXF (R2000 ASCII, the one every machine reads) or as a native DWG.

Phones, tablets and as an app

Touch mode on iPhone, iPad and Android; installable from the address bar so it opens offline like a program of its own.

Works with

DXF R12 to 2018
$ACADVER AC1009 through AC1032. Older files with no version variable at all are read too — the reader does not refuse a file for a missing header.
ASCII and binary
Text DXF of any size, and the binary variant. Group codes are read by meaning, so a file with unusual ordering still loads.
DWG as well
The same viewer reads DWG, so you can open the original next to its DXF export. There is a dedicated DWG viewer page for that.
Phones and tablets
Touch mode with pinch zoom, a loupe for precise picks, and an action bar for Enter, Escape and Undo.
Install as an app
Chrome and Edge show an install icon in the address bar; Safari on iPhone uses Share ▸ Add to Home Screen. Works offline afterwards.
Large exports
Up to 100 MB in the browser — a DXF is text, so a 100 MB file is a big drawing. Larger ones are a job for the free desktop app.

Why a browser DXF viewer beats a download for most jobs

DXF is a plain-text format, and a surprising number of “viewers” for it are really converters in disguise: they upload your file, render it into an image on their server, and show you the picture. Fine for a glance, useless for the question you actually have — is this contour closed, is that 12 mm or 0.47 in, which layer is the engraving on. An image cannot answer that; a CAD can.

Here the file opens as geometry, in your browser, without an upload. You snap to an endpoint and measure. You turn layers off. And because it is the full NASJI CAD rather than a viewer, when the answer is “no, that outline is open by half a millimetre”, you fix it and save the DXF back out — the R2000 ASCII kind every cutter and every other program reads — instead of going back to whoever exported it. When you want the whole thing as a picture or a PDF to send on, the DXF to SVG and DXF to PDF converters are one step each.

DXF viewer — frequently asked questions

Does the viewer open binary DXF as well as ASCII?

Yes. Binary DXF — the compact variant some programs write to save space — is recognised by its sentinel and read directly. So are ASCII files in any release from R12 to 2018, with either Windows or Unix line endings, and files with a UTF-8 byte-order mark at the start.

Why does my DXF open empty, or as a tiny dot?

Three usual reasons. The geometry sits far from the origin, so the initial view is zoomed on empty space — press Zoom Extents. The file's drawing is in paper space or inside a block that is never inserted — check the layouts and block list. Or the export really is empty, which happens when a program writes only the entities that were selected. The viewer shows the entity count so you can tell which.

Can I open a DXF that came from Inkscape, Illustrator or a laser program?

Yes. Those exports are ordinary R12 to R2000 ASCII DXF: mostly polylines, splines and sometimes text. They open as they are. Two things to check once open: the units (Inkscape exports in millimetres by default, Illustrator asks), and whether curves came out as splines or as many short line segments, which affects how a cutter treats them.

Is my file uploaded to convert or view it?

Not for viewing. The DXF is stored in your browser's IndexedDB and opened from there by the CAD in the same tab; no server is involved. Only the converters on this site upload a file, and they say so.

Can I convert the DXF to DWG after viewing it?

Yes, two ways. In the viewer, Save As and choose DWG, which writes a native 2018-format file. Or, without opening it, use the DXF to DWG converter page, which does the same rewrite on the server and hands the DWG back as a download.

Is the DXF viewer free, and does it work on Android?

Free, with no account and no limit on files; the CAD around it is free too. On Android, open this page in Chrome, tap Open a file and choose the DXF from Files or Drive. Two-finger pinch zooms, one finger pans, and Chrome offers to install it as an app.

Open your DXF now.

Free, no account, nothing uploaded. Saves as DXF, DWG, SVG or PDF.