HTML Preview
Preview an HTML fragment in an isolated browser frame.
88 useful tools · Free to use · No sign-up
The little things you need. Ready when you are.
Preview an HTML fragment in an isolated browser frame.
Format HTML with consistent indentation and readable structure.
Remove unnecessary CSS whitespace and optimize stylesheet size.
Minify JavaScript with Terser in your browser.
Extract readable text from HTML without scripts or styles.
Generate title, description, canonical and Open Graph tags.
Mock up a social sharing card from your title, description and URL.
Preview pasted HTML at a selected device width.
Query public DNS records through Cloudflare DNS over HTTPS.
Resolve a domain to its public IPv4 addresses.
Generate an example DNS zone record for your hostname.
See how a page title and description might look in search results.
Create a practical meta description template from your offering.
Count title characters and estimate a practical SEO title range.
Find the most repeated words and their share of an English text.
Count words, characters, sentences and estimated reading time.
Create a robots.txt file with a user-agent, disallowed paths and sitemap.
Turn a list of page URLs into an XML sitemap.
Create a canonical link tag for the preferred URL of a page.
Generate alternate-language link tags for localized pages.
Generate JSON-LD for an Organization or WebSite.
Turn a page title into a clean, lowercase URL slug.
Build campaign URLs that make every marketing click measurable.
Extract campaign source, medium, name, term and content from a URL.
Encode or decode a URL component without changing your source text.
Add or replace query parameters while keeping the URL fragment.
Calculate the average advertising cost per click.
Calculate the advertising cost per 1,000 impressions.
Measure the share of impressions that became clicks.
Calculate the cost of each attributed acquisition.
Know how much revenue you earn for every dollar of ad spend.
Measure net return relative to total investment.
Calculate the percentage of visits that result in a conversion.
Estimate spend from a target conversion count and expected CPA.
Check text against the 30-character responsive search ad headline limit.
Check descriptions against the 90-character responsive search ad limit.
Create a WhatsApp click-to-chat link with an optional message.
Create a Telegram contact link from a public username.
Generate a mailto link with a subject and pre-filled message.
Turn a link or short text into a downloadable QR code.
Read the text or link inside a QR code image locally.
Calculate the proportion of leads that became customers.
Measure conversion between visits, leads and customers.
Estimate gross-margin-adjusted customer lifetime value.
Estimate the average cost of acquiring a new customer.
Calculate profit and margin from revenue and costs.
Create a ready-to-send WhatsApp message link for your audience.
Generate a Telegram sharing link for a page and message.
Create sharing links for X, Facebook, LinkedIn and Telegram.
Compare text length against common social post limits.
Clean, deduplicate and format a list of hashtags.
Clean extra spaces and preserve intentional line breaks in your bio.
Get the public thumbnail URLs for a YouTube video.
Build a simple downloadable HTML page containing your links.
Reduce image file size with adjustable JPEG or WebP quality.
Resize an image to exact dimensions, entirely in your browser.
Convert images between PNG, JPEG and WebP.
Crop the center of an image to a chosen output size.
Encode an image as a data URL for embedding in HTML or CSS.
Rasterize an SVG image into a PNG at your chosen dimensions.
Generate a square PNG favicon from your image.
Create centered crops for square, portrait or landscape social posts.
Preview and download a PNG, JPEG or WebP from a Base64 data URL.
Combine multiple PDFs into one document in your browser.
Extract a page or a page range into a new PDF.
Format JSON into a readable, indented document.
Check whether a JSON document can be parsed successfully.
Encode UTF-8 text as Base64 or decode it back to text.
Read the header and payload of a JSON Web Token locally.
Generate cryptographically random version 4 UUIDs.
Generate a strong random password locally in your browser.
Calculate a SHA-256, SHA-384 or SHA-512 hash of text.
Convert Unix seconds or milliseconds into an ISO UTC date.
Convert an ISO date with timezone into Unix time.
Test a JavaScript regular expression against a text sample.
Convert a HEX color to RGB and HSL values.
Use whois lookup directly on OceanName.
Use ip lookup directly on OceanName.
Use ssl checker directly on OceanName.
Use redirect checker directly on OceanName.
Check registry RDAP records before buying a domain.
Compare DNS answers from Cloudflare and Google.
Inspect public HTTP response headers and redirect steps.
Capture a public webpage as a 1280 × 800 PNG.
Inspect titles, descriptions, headings, canonical tags and image alt text.
Find common analytics and advertising pixel code in a webpage.
Convert a selected PDF page into a PNG on your device.
Open the dedicated 2FA.global tool for time-based one-time passwords.