SVG viewer and inspector
Read an SVG's size and viewBox, and see whether it carries anything unsafe.
Processed in your browser. This file is converted on your device and is never uploaded.
Converter
.svg up to 50 MB. You can also drag a file here.
No file selected.
About this tool
Opening an unfamiliar SVG usually means answering two questions: what size is it actually, and does it contain anything it should not. An SVG can carry scripts, event handlers, and references that fetch from other sites, and none of that is visible when you look at the picture.
This tool reads the document, reports its declared width, height, and viewBox, counts its elements, and lists anything executable or externally-fetching it found. The download is a cleaned copy with that content removed.
Supported formats and limits
- Input
- .svg
- Output
- .svg (image/svg+xml)
- Output name
- The original name with -cleaned, for example logo.svg becomes logo-cleaned.svg.
- File size limit
- 50 MB
- Processing
- In your browser. The file is not uploaded.
How to use it
- Choose a .svg file, or paste the markup.
- Read the report and the preview.
- Select Convert to download the cleaned copy.
Limitations
- This reports what the document declares. An SVG with only a viewBox has no pixel size at all, which is exactly what the report will say.
- Only absolute pixel sizes are read. A width given as a percentage depends on a container that does not exist here, so it is reported as absent.
- The element count includes every node, not only visible shapes.
- The cleaned copy is not optimized. Use the optimizer or minifier for that.
Common problems
The file was refused before anything started.
SVG viewer and inspector checks the extension before it reads a byte, and it accepts .svg. Browsers report file types inconsistently enough that the extension is what decides.
Rename the file if the extension is simply wrong, or convert it to one of those first. A file whose extension does not match its contents is refused for the same reason, and that one needs converting rather than renaming.
It said the file was too large.
The limit here is 50 MB. It is not a policy but a measurement: everything runs on your own device, and past that size a phone runs out of memory rather than finishing slowly.
Split the file, reduce it before converting, or use a desktop program for that one. A machine with more memory will manage more, but the limit does not know which machine it is on.
I selected several files and only one converted.
This tool takes one file at a time. Doing several at once would multiply the memory in use, which is the thing most likely to fail on a phone.
Convert them one after another. Nothing is kept between them, so there is no state to reset.
The tab reloaded itself part-way through.
The browser ran out of memory and restarted the page. At sizes approaching 50 MB this is the failure a phone hits first, and it looks like a crash rather than an error.
Try a smaller file, close other tabs, or run it on a computer. Nothing was uploaded or lost — the original file is untouched on your device.
The result opened in the wrong program.
The output is a .svg file, and your system opens that extension with whatever it was told to. Nothing about the conversion decides it.
Open it from inside the program you want, or change the default for .svg in your system settings. The file itself is correct.
Frequently asked questions
- Is my file uploaded?
- No. The file is parsed in your browser and never leaves your device.
- Why does it say my SVG has no width?
- Because it declares only a viewBox, or declares a percentage. Both are common in icon sets, and both mean the file has no intrinsic pixel size; whatever displays it decides how large it is.
- What counts as unsafe content?
- Script elements, event handler attributes such as onload, javascript: links, foreignObject blocks, and any reference that would fetch from another origin.
- Can I trust the cleaned copy?
- It has had everything executable and externally-fetching removed by a parser rather than by pattern matching. That is a much stronger position than the original, though nothing replaces knowing where a file came from.
- Do I need to install anything or create an account to use SVG viewer and inspector?
- No, to all of it. SVG viewer and inspector runs inside the browser you already have, with no sign-up, no download, no watermark on the result, and no cap on how many files you convert. There is nothing to uninstall afterwards either, because nothing was installed.
- Does SVG viewer and inspector work offline?
- Once the page has loaded, yes. The conversion runs on your device, so it needs no connection to do the work. The first visit fetches the page and the code that does the converting; after that a lost connection stops nothing, and a converted file appears exactly as it would online.
- How large a file can SVG viewer and inspector handle?
- The limit is 50 MB. It is a deliberate one rather than a technical ceiling: the real constraint is memory, and a file that decodes to more than the device can hold fails in a way that is hard to explain. Phones run out well before laptops do, which is why the limit is set where it is.
- Can I convert several files at once with SVG viewer and inspector?
- Not here: this tool takes one file at a time, because what it does depends on choices you make about that particular file. Convert them one after another, or look at the batch converters in the same category, which are built for a folder at a time.