DataLosslessRuns in your browser

XML to YAML Converter

Turn XML files into YAML in a couple of clicks. XML is verbose but strict hierarchical markup; YAML is an indentation-based config format that humans actually read. The conversion is lossless — every pixel, sample or byte in the source is preserved.

Not uploaded to any serverConverted on this deviceGone when you close the tabHow this works

Drop your files here

XML files (.xml) · up to 100 MB each

or paste files from your clipboard

Ready when you are

Drop a XML file above and FileTools360 will turn it into YAML — right here on your device, without uploading anything.

⌘K to search converters

How to use it

1
Add your XML files
Drag them onto the drop area, choose them from your device, or paste them from your clipboard. You can queue several at once. Nothing is sent anywhere — the file stays on this device.
2
Adjust the settings if you want to
The defaults suit most people. Open Advanced to control indentation and element names.
3
Convert and download
Press Convert. Everything happens on your own device — nothing is uploaded. Download files one by one, or grab them all as a ZIP.

Privacy, in plain words

Is it safe? Your XML file is not uploaded anywhere

What “uploaded” normally means. On most online converters, pressing the button copies your file across the internet onto a computer owned by that website. That copy is what the word “upload” means, and it is the part nobody explains.

What happens instead. This site does not do it. There is no server here that receives files, so your XML file is read, converted and handed back by the browser you are using right now. It never travels — so there is no copy to store, read, leak or hand over.

Check it yourself in ten seconds

Turn off your Wi-Fi after this page has loaded, then convert a file anyway. It still works, because everything needed is already on your device.

The longer explanation of how this works, and the full detail of what is and is not stored on the privacy page.

Why this matters more than it sounds

A CSV or JSON export is personal information in bulk — the format is boring, and what is in it usually is not. It matters more than it sounds, because of what data files usually are:

Transaction records

who paid what to whom, and when

Configuration files

these are where credentials get left by accident

Customer exports

every record your CRM holds, in one file

Survey responses

answers people gave on the understanding they were private

A file that is never sent cannot be kept, leaked, subpoenaed or used to train anything. That is a property of how this works, not a promise about how carefully it is run.

XML and YAML explained

XML is a markup language for hierarchical data, with elements, attributes and optional schema validation. It is more verbose than JSON but far more rigorous.

YAML expresses structured data through indentation rather than brackets, which makes configuration files far easier to read. It is a superset of JSON.

Where XML files come from: Enterprise integrations, RSS feeds, and document formats like DOCX and SVG.
Where YAML is used: CI pipelines, Kubernetes manifests, Docker Compose and application config.

XML vs YAML

The two formats solve different problems, which is why converting between them involves trade-offs rather than a straight upgrade.

XML compared with YAML
Property	Source	Target
Compression	None	None
Introduced	1998	2001
Browser support	Universal, though JSON has replaced it in most new work.	Broad in DevOps tooling.

XML is stronger at: Schema validation catches malformed data. Namespaces prevent naming collisions. Attributes and elements model documents well.
YAML is stronger at: Very readable for configuration. Supports comments, which JSON does not. Anchors let you avoid repetition.

Why convert XML to YAML?

People make this switch when they run into the limits of XML: new web APIs, where JSON is expected. YAML is the better fit when configuration files a human will read and edit.

XML limitations that prompt the switch: Verbose — often several times the size of equivalent JSON. More complex to parse. Largely displaced by JSON for new APIs.
What you give up: Indentation-sensitive, so whitespace errors are easy to make. Tabs are forbidden, which surprises people constantly.

What is preserved when converting XML to YAML?

Both formats store the content without discarding data, so this conversion preserves it exactly. The file size may change because the two formats compress differently, but the content itself is unaffected.

Measured, not estimated

What converting XML to YAML actually costs

On every sample measured, the YAML came out smaller — 1.4× smaller at worst and 1.5× smaller at best.

Each row is one sample chosen to isolate a property these formats treat differently.
Sample	XML in	YAML out	Change
A plain tableTen rows of flat records — the shape almost every spreadsheet export actually has.	1.7 KB	1.1 KB	−32%
Many columnsForty columns across three rows. Column-heavy data is where per-cell overhead shows up.	4.3 KB	3.0 KB	−30%
Nested recordsObjects inside objects. This is the shape that cannot survive a flat format intact, and the one that triggers a warning.	1.6 KB	1.0 KB	−34%
Commas and quotation marksText fields containing the delimiter and the quote character — where an escaping bug would show.	1.6 KB	1.2 KB	−28%

Produced by this site's own converter. The same code that runs in your browser, at the same default settings, so these are the bytes you would download.

Samples are generated from a fixed seed rather than taken from real photographs or documents, so the corpus is reproducible and carries no licensing question — and so the numbers predict the shape of your result rather than its exact size. Measured 2026-10-01. The method, and the command that regenerates every figure on this page, are on the how it works page.

About these formats

Source

Extensible Markup Language

Verbose but strict hierarchical markup.

Extensions: .xml
MIME type: application/xml
Best for: Enterprise integrations · Feeds · Document schemas
Compatibility: Universal, though JSON has replaced it in most new work.

Target

YAML Ain't Markup Language

Indentation-based config format that humans actually read.

Extensions: .yaml, .yml
MIME type: application/yaml
Best for: CI pipelines · Kubernetes · App configuration
Compatibility: Broad in DevOps tooling.

XML attributes are prefixed with @ and text content lands under #text, so nothing is silently thrown away.

Good to know

XML to YAML Converter — questions

How do I convert XML to YAML?

Drop your XML file onto the area above, then press Convert. The YAML file saves straight to your device. You do not need an account, and there is no watermark.

Is it safe to convert XML files here — are they uploaded to a server?

No, nothing is uploaded. On most online converters, pressing the button copies your file across the internet onto a computer owned by that website; it is converted there and sent back. That copy is what "upload" means, and it is the part that puts your file out of your control. This site does not do it. Your XML file is read and converted by the browser you are using right now and never leaves this device, so there is no copy for anyone to store, read or hand over. You can prove it: turn off your Wi-Fi after this page loads and the conversion still works.

Can I convert confidential XML files, like bank statements or contracts?

Yes, and that is the case this site was built for. Because the file never leaves your device, a confidential document is no more exposed than it is sitting in your own folder — there is no transfer, no copy on someone else's hardware, no retention period to read about and no staff with access. Nothing is logged about the file either: not its name, not its size, not its contents. The one thing worth saying plainly is that this protects the file in transit and at rest on our side, not from anything already on your own computer.

What should I know before converting XML to YAML?

XML attributes are prefixed with @ and text content lands under #text, so nothing is silently thrown away.

What is preserved when converting to YAML?

Everything in the file carries over. YAML stores the same values as XML, so the data itself is unchanged — what differs is the syntax around it, and anything YAML has no way to express, such as comments, is dropped.

How large a file can I convert?

Up to 100 MB per file for this conversion. Because the work happens in your browser, the practical limit is your device's memory — larger files work on a desktop with plenty of RAM and may fail on an older phone.

Can I convert several files at once?

Yes. Add as many as you like and press Convert All. Each file is processed independently, so one failure does not stop the rest, and you can download everything together as a ZIP.

Can I use this on my phone?

Yes. FileTools360 works in mobile browsers on iOS and Android. Pick the file through your phone's file picker — Files on iOS, or Downloads on Android — including files stored in iCloud or Google Drive.