Skip to content
Free Tools Galaxy
📐
100% free · no signupRuns in your browser

XML Formatter

Pretty-print and indent any XML document.

Best for: Reading a dense one-line XML payload, debugging a config or feed, or minifying XML before sending it.

Complete guide

Input

How it's calculated & sources
The XML Formatter uses the standard, deterministic formula, so the same inputs always produce the same result. It runs entirely in your browser, so your inputs are never uploaded. Last reviewed June 2026.

Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.

Continue your journey

Where people usually head next.

✨
AI Tool Finder
Describe what you need and AI finds the right tool instantly.
🧬
Base64 Encode/Decode
Encode or decode Base64 strings.
🔗
URL Encoder/Decoder
Encode and decode URL components.
{ }
JSON Formatter
Beautify and validate JSON instantly.

Complete guide

Quick answers

Short, sourced answers to the questions people (and AI assistants) ask most.

What is XML Formatter?
An XML formatter pretty-prints or minifies XML with consistent indentation and flags malformed markup, so you can read config files, SOAP responses, RSS feeds and data exports.
Why does XML Formatter matter?
Clean indented output means the XML is well-formed; an error points to the first structural problem. Note that well-formed is not the same as valid against a schema (DTD/XSD).
How is XML Formatter calculated?
It checks the document against XML well-formedness rules — exactly one root element, every tag closed and correctly nested, and the special characters & < > escaped — then re-indents nested elements. If the markup is broken it reports the first problem.
What are common xml formatter mistakes?
Unescaped &, < or > in text — write &amp;, &lt; and &gt;.
When should you use the XML Formatter?
Reading a dense one-line XML payload, debugging a config or feed, or minifying XML before sending it.

What is the XML Formatter?

An XML formatter pretty-prints or minifies XML with consistent indentation and flags malformed markup, so you can read config files, SOAP responses, RSS feeds and data exports.

How the XML Formatter works

It checks the document against XML well-formedness rules — exactly one root element, every tag closed and correctly nested, and the special characters & < > escaped — then re-indents nested elements. If the markup is broken it reports the first problem.

Key terms

Element:
A tag pair and its content, e.g. <name>Ada</name>.
Attribute:
A name="value" pair inside a start tag.
Well-formed:
Follows XML syntax rules; required for any XML.
Namespace:
A prefix that disambiguates element names from different vocabularies.

Common mistakes to avoid

  • Unescaped &, < or > in text — write &amp;, &lt; and &gt;.
  • More than one root element, or tags that overlap instead of nesting.
  • Mismatched case — <Item> and </item> are different tags in XML.
  • Confusing well-formed (syntax) with valid (matches a schema).

Keywords: xml, format, pretty.

Sources: W3C — Extensible Markup Language (XML), MDN — XML introduction

Reviewed by the Free Tools Galaxy editorial team · Updated June 2026 · Calculated privately in your browser.

Frequently asked questions

Is the XML Formatter free to use?+

Yes. Every tool on Free Tools Galaxy is 100% free, runs in your browser and requires no signup.

How accurate is the XML Formatter?+

XML Formatter uses the standard xml formatter formula in double-precision arithmetic, so the same inputs always produce the same result and you can verify any figure by hand. It is an educational estimate — real-world outcomes depend on your actual rates, rules and assumptions.

Do you store my inputs?+

No. The XML Formatter runs entirely in your browser. Nothing is uploaded or saved to a server.

Can I use the XML Formatter on mobile?+

Yes — the interface is fully responsive and works on phones, tablets and desktops.

What are common mistakes to avoid?+

The most frequent mistake is mixing units. Double-check your inputs use a single, consistent unit before clicking Calculate.

Explore more

Popular tools

🚭
Smoking Cost Calculator
Lifetime cost of cigarettes per day, week, year.
⌨️
Typing Speed Test
Test your WPM and accuracy with a live typing challenge.
📚
Study Planner
Plan study hours across subjects based on topics and days left.
➕
Simple Calculator
Basic arithmetic for two numbers: add, subtract, multiply, divide.

Trending in web

🧬
Base64 Encode/Decode
Encode or decode Base64 strings.
🔗
URL Encoder/Decoder
Encode and decode URL components.
{ }
JSON Formatter
Beautify and validate JSON instantly.

Explore other categories

🧾
SSI Payment Calculator
Estimate your 2026 monthly Supplemental Security Income (SSI) from your income and living situation.
🏦
PPF Calculator
Project your Public Provident Fund maturity with a full year-by-year schedule.
💼
EPF Calculator
Estimate your Employees' Provident Fund corpus at retirement.
🧓
NPS Calculator
Project your National Pension System corpus, lump sum and monthly pension.
Related searches: xml validator, xml to json converter, json formatter

Smart Autopilot

AI-style routing · 100% on-device

Based on this tool, your recent activity and how others chain tools together.

Likely next step

✨AI Tool FinderTop match🧬Base64 Encode/DecodeEncode or decode Base64 strings.🔗URL Encoder/DecoderEncode and decode URL components.{ }JSON FormatterBeautify and validate JSON instantly.🔎Regex TesterLive JavaScript regex tester with match highlighting and flags.🆔UUID v4 Generator (Bulk)Generate any number of cryptographically random RFC 4122 v4 UUIDs.

Smart recommendations

Next best tool

✔️
XML Validator
Validate XML well-formedness using the browser DOMParser.

Trending in web

🧬
Base64 Encode/Decode
Encode or decode Base64 strings.
🔗
URL Encoder/Decoder
Encode and decode URL components.
{ }
JSON Formatter
Beautify and validate JSON instantly.

Also worth a look

½
Fraction Calculator
Add, subtract, multiply and divide fractions with auto-simplification.
📋
SGPA Calculator
Semester Grade Point Average for a single term.
🔌
Power Converter
Watts, kilowatts, horsepower and BTU/hour conversions.
💓
Target Heart Rate Calculator
Karvonen formula target HR zone for cardio.

Share & publish

Share & challenge

Twitter Facebook LinkedIn WhatsApp
Share-to-grow kit (Reddit, LinkedIn, Medium)
Reddit post
Title: I built/used this free xml formatter — instant, no signup

Body: Pretty-print and indent any XML document. Try it: https://freetoolsgalaxy.com/tools/xml-formatter
LinkedIn post
XML Formatter on Free Tools Galaxy — Pretty-print and indent any XML document. https://freetoolsgalaxy.com/tools/xml-formatter
Medium intro
# XML Formatter — the free tool I keep coming back to

Pretty-print and indent any XML document.

Try it: https://freetoolsgalaxy.com/tools/xml-formatter
Quora answer
The fastest way is to use a free in-browser xml formatter: https://freetoolsgalaxy.com/tools/xml-formatter. Pretty-print and indent any XML document.

Embed this tool anywhere

Free embed code for blogs, docs and dashboards. Every embed sends a backlink home — helping you and the galaxy grow together.

HTML iframe
Drop into any site — auto-resizes to its content height, theme-aware.
<iframe src="https://freetoolsgalaxy.com/tools/xml-formatter?embed=1" title="XML Formatter" loading="lazy"
  style="width:100%;height:600px;border:0;border-radius:16px;background:#0b1020"
  allow="clipboard-write"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.type==="ftg-embed-height"){document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source){f.style.height=e.data.height+"px";}});}});</script>
<p><a href="https://freetoolsgalaxy.com/tools/xml-formatter" target="_blank" rel="noopener">Powered by XML Formatter on Free Tools Galaxy</a></p>
Responsive wrapper
Aspect-locked container — good for blog post bodies.
<div style="position:relative;padding-bottom:75%;height:0;overflow:hidden;border-radius:16px">
  <iframe src="https://freetoolsgalaxy.com/tools/xml-formatter?embed=1" title="XML Formatter" loading="lazy"
    style="position:absolute;inset:0;width:100%;height:100%;border:0" allow="clipboard-write"></iframe>
</div>
WordPress / Markdown
Paste in a custom-HTML block or markdown file.
[XML Formatter — free online tool](https://freetoolsgalaxy.com/tools/xml-formatter)

<iframe src="https://freetoolsgalaxy.com/tools/xml-formatter?embed=1" width="100%" height="600" frameborder="0"></iframe>
Text link-back
Minimal credit link — best for sidebars and footers.
<a href="https://freetoolsgalaxy.com/tools/xml-formatter" target="_blank" rel="noopener">Try the free XML Formatter</a>

Share-to-Grow Kit

Pre-written, ready-to-paste posts for every major channel. Help others discover this tool — and earn backlinks.

Title
I built a free fraction calculator that works instantly in the browser — no signup, no ads in your face
Body
Hey r/[subreddit],

I kept needing a quick fraction calculator and most options online were slow or behind paywalls, so I built one that:

• Runs 100% in your browser (your data never leaves your device)
• No signup, no email wall, no popups
• Loads in under a second on mobile

It covers the standard fraction use cases (fraction, math) and links out to the formula + worked examples if you want to learn the math.

Link: https://freetoolsgalaxy.com/tools/fraction-calculator

Happy to take feedback — what's missing?
Post to a relevant subreddit (e.g. r/InternetIsBeautiful, r/webdev, r/productivity). Avoid spammy subs.
Developer & SEO tools