Geolocation to Address - Online Reverse Geocode
Enter latitude and longitude and get a human‑readable address using the browser's built‑in reverse geocoding (if available).
UD5 Toolkit
Reverse your videos instantly — play backwards & save. 100% free, no upload required.
canvas.captureStream() and MediaRecorder APIs — both are well-supported in modern browsers. If your browser doesn't support these, you'll see a clear notification with upgrade suggestions.
Enter latitude and longitude and get a human‑readable address using the browser's built‑in reverse geocoding (if available).
Convert .srt subtitles to .vtt format for web video players. Preserves all timestamps and formatting. Local.
Build a 3D card flip effect and toggle backface‑visibility. See the hidden back face. Copy the complete CSS.
Convert plain text into HTML‑safe strings by escaping <, >, &, and quotes. Insert into code safely. Local copy.
Automatically restore natural colors to a photo by removing color casts. Gray world algorithm. One‑click fix. Canvas.
Flip a coin with adjustable bias (e.g., 70% heads). Used for random decision-making when you want to gently influence outcomes. History & stats shown.
Instantly convert plain text into HTML‑safe escaped characters for secure display in web pages. Prevent cross‑site scripting. All processing local.
Encode latitude/longitude into a geohash string and decode a geohash back to coordinates with precision info. Local algorithm.
Paste a WebVTT file and instantly check for syntax errors. Validate timestamps and cue formatting. Essential for video devs.
Enter original and target color to compute the exact CSS hue‑rotate(deg) filter needed. For precise icon and image tinting.
Enter an HTML snippet and see a rough transcription of what a screen reader might announce. Check alt texts.
See how a PWA can extend content into the title bar area on desktop. Customize the window controls overlay.
Create SEO‑friendly slugs that handle characters from any language. Removes accents, converts Cyrillic, Greek, etc. to Latin. Local.
Convert plain text lines into HTML ordered or unordered lists. Instantly copy the generated HTML to paste into your website. No hassle, fully browser-based.
Enter a text color and background color and instantly see if the combination passes WCAG AA and AAA ratio. Safe colors.
Set your birth date and see a live countdown with days, hours, minutes, and seconds. Shareable link. Pure frontend.
Paste any DNS record and check if its format is valid for the selected record type (A, AAAA, CNAME, MX, TXT, SRV). Prevents typos.
Create a 5‑star rating widget using only HTML and CSS. Customize colors and size. Copy the clean code.
Paste your manifest.json and instantly validate it against the W3C spec. Catch errors and warnings. Client‑side.
View the moon phase for any date in past or future. See full moon dates and eclipses for a given year.
Paste JavaScript and catch syntax errors instantly with line numbers. Lightweight pre‑commit check. Local.
Paste a string of weather emojis and get a written weather forecast. Fun and educational emoji tool.
Build a simple decision tree by adding yes/no nodes. Flowchart style. Export as text outline.
Calculate the perceived brightness of an RGB color and determine if black or white text is more readable. Accessibility tool.
Enter any number up to trillion and get the English word representation. For filling out checks or legal documents.
Paste an SVG and check if the graphic‑aria roles are used correctly. Improve accessible diagrams and icons.
Paste a set of hex colors and simulate how they appear with common color vision deficiencies. Get contrast warnings.
Validate a language tag like en‑US or zh‑Hans against the IANA registry. Ensure correct HTML lang attribute.
Paste HTML snippet and highlight interactive elements missing accessible labels. Quick a11y audit.
Shift the color temperature of your photo towards warm (orange) or cool (blue). Instant canvas filter. Download result.