HTML Color Extractor — Find All Colors
Extract all color values (hex, rgb, hsl) from HTML and CSS code.
How it works
- 1Paste or type your text in the input field
- 2Click "Process" — processing happens in your browser
- 3Copy the result or download as a text file
What to do next
About HTML Color Extractor
HTML Color Extractor is a self-contained developer utility workspace. Extract all color values (hex, rgb, hsl) from HTML and CSS code. Open the page, get the result, close the tab — that is the entire workflow.
If you fit any of these descriptions, HTML Color Extractor should slot cleanly into your workflow: QA engineers writing repro cases; students learning new languages; engineers debugging API payloads. The tool keeps the controls focused on what matters for each of these use cases.
HTML Color Extractor performs the transformation entirely inside the JavaScript runtime. Your file lives in the tab's memory while the engine works on it; the result lives in the tab's memory until the browser triggers the download. Both are released when the tab closes, the way every browser tab releases its memory.
From a technical standpoint, HTML Color Extractor is JavaScript and standard browser APIs running in your tab. The browser is the runtime; the page is the interface. Maximum input size: 0 MB per run.
Reach for HTML Color Extractor when you need a predictable result on a single file. The page works on the first visit, the controls are visible without a menu, and the output is delivered the moment the engine finishes.
For multi-step jobs, HTML Color Extractor sits next to CSS Variable Extractor, Color Picker, and Color Name Finder. None of them depend on each other — you can use HTML Color Extractor on its own — but together they cover the common variations of the task this page exists to handle.
HTML Color Extractor returns the result as a download. If you are running multiple jobs, the output names will not collide as long as the input names differ. You can re-run with different settings as many times as you like; each run produces a fresh file with no caching trickery in between.
A practical note on limits: HTML Color Extractor accepts inputs up to 0 MB per run, and the tool processes one input at a time to keep memory usage predictable. If you ever bump into the ceiling, the cause is the size of the input.
The transformation in HTML Color Extractor is deterministic — the same input plus the same options produces the same result every run. That predictability matters when the result has to match an upstream specification or be reproducible later.
Some context on why HTML Color Extractor exists in this form: modern File APIs, high-performance JavaScript engines, and well-maintained open-source libraries now make it possible to perform developer utility work entirely in the browser. HTML Color Extractor is built on top of that capability, which is why a single page can host the full pipeline.
Tips from users who reach for HTML Color Extractor regularly: process one input first to confirm the settings produce what you expect before committing to a batch; treat the page as the working surface and avoid leaving large jobs running in a backgrounded tab where the browser may throttle JavaScript; and if a particular file fails, check whether the source is intact by opening it in its native viewer — most "tool errors" are actually input errors.
If the result is not what you expected, the most common causes are easy to check. Confirm the input is under the 0 MB ceiling — files just above the cap fail silently because the engine refuses to allocate the buffer. Confirm the input is one of the supported formats. And if the page itself feels slow, try closing other heavy tabs to free up memory; the engine runs in your browser, so it competes for the same resources as everything else open.
HTML Color Extractor produces deterministic output: the same input plus the same options always produces the same result. That predictability matters when the result has to match an upstream specification or be reproducible later.
Open the workspace above to start using HTML Color Extractor. The engine loads on the first interaction so the page itself stays light, and once the tool is warm it processes subsequent jobs quickly. The moment the page is interactive, the tool is ready to do real work on your file.
How it works
- 1Reach the HTML Color Extractor page in your browser to begin.
- 2Add your developer input by dropping it onto the page or browsing for it.
- 3Pick any non-default settings you need. Most users leave the defaults alone for the first run and only revisit if the result needs tuning.
- 4Hit the run button. standard browser APIs does the work in your browser tab.
- 5Grab the output as soon as the run completes. You can also copy the result instead of downloading if the next tool in your workflow accepts pasted input.
- 6Re-run with different settings as often as you want. Each run produces a fresh output and the original file on disk is never modified.
Common use cases
- Convert between data formats while wiring up an integration using HTML Color Extractor.
- Validate a config blob before pushing to staging.
- Pretty-print a minified blob during incident triage.
- Decode a token to confirm its claims during a debugging session.
- Compare two API responses to spot a regression.
- Generate a quick fixture without leaving the browser.
- Generate boilerplate from a single specification line.
- Hash a string for a quick reproducibility check.
FAQ
What color formats are detected?
Hex (#RGB, #RRGGBB, #RRGGBBAA), rgb(), rgba(), hsl(), and hsla() values.
Are duplicates removed?
Yes — each unique color value is listed only once.
Does it find CSS named colors?
No — only hex, rgb(), and hsl() notation are extracted. Named colors like "red" are not detected.
Can I extract from CSS files?
Yes — paste CSS code directly. The tool searches for color patterns regardless of context.
Does it work with inline styles?
Yes — colors inside style="" attributes are extracted along with any other colors in the input.
Is my data safe?
All processing happens in your browser.
Why use HTML Color Extractor instead of a paid online tool?
Desktop apps usually have more advanced features but require installation, maintenance and (often) a licence. Paid online tools are convenient but route your file through their servers and gate downloads behind accounts. HTML Color Extractor sits in between: free, instant, and private, but intentionally narrow in scope. For one-off jobs and the common developer utility operations, it is usually the lowest-friction choice; for highly specialised work, a dedicated app is still the right answer.
Does HTML Color Extractor work on a phone or tablet?
HTML Color Extractor runs in any modern mobile browser — Safari, Chrome, Firefox and the in-app browsers in most messaging apps all support the underlying APIs. Performance depends on the device: a recent phone handles typical inputs nearly as fast as a laptop, while older devices may take a few seconds longer near the 0 MB ceiling. The interface lays out cleanly on small screens, so you do not need to pinch-zoom to see the controls.
Can I use HTML Color Extractor offline?
Once the page is loaded, HTML Color Extractor can complete jobs without an active internet connection — the engine is bundled with the page, so there is no per-job network call. The initial page load does require a connection (to fetch the static assets), but after that you can disconnect entirely and the tool will still work. This is a side-effect of the local-first architecture, not a deliberate "offline mode" feature.
Does HTML Color Extractor ask for any browser permissions?
HTML Color Extractor only needs the standard web platform — file picker access for the inputs you choose to load, and optionally clipboard access if you copy the result rather than downloading it. There is no microphone, camera, geolocation or background-permission request, because none of those are needed for the work the tool does.
Can HTML Color Extractor run inside a corporate firewall?
HTML Color Extractor is a static page running an open-source engine in your browser, so a typical corporate firewall does not get in the way as long as it allows JavaScript to load from Favtoo. For teams that need to host it themselves on an internal network, the underlying engine (standard browser APIs) is open-source and can be packaged into a private build with the same behaviour. Reach out via the Contact page if that is something you are exploring.
How fast is HTML Color Extractor?
Most jobs finish in seconds. Speed scales with input size and with how many CPU cycles your browser tab has available — the engine runs in your browser, so it shares resources with whatever else you have open. For inputs near the 0 MB ceiling, expect anywhere from a few seconds to roughly a minute on a typical laptop. Closing other heavy tabs noticeably speeds things up.
Will HTML Color Extractor ask me to pay to download the result?
HTML Color Extractor is free to use. The processing runs in your browser, which keeps the per-user cost low enough that the tool can be offered openly. The download is the same file the engine produced — you can use it for as many runs as you need.