UTF‑8 to Base64 Converter - Online Encode Text
Encode any text, including emojis and foreign scripts, into a Base64 string. Perfect for data URLs. Local.
UD5 Toolkit
Convert JSON-LD documents to W3C Turtle (TTL) RDF format instantly
@context prefix mappings, resolves property URIs, and outputs clean Turtle triples with proper @prefix declarations, a for rdf:type, blank nodes, and typed literals. Nested objects become blank nodes [ ] or URI references.
@context with prefix mappings and @vocab@id, @type (single & array)@value with @type (typed literals) and @language@list, @set, @graph@prefix abbreviations, supports compact predicate-object lists with semicolons, and comma-separated multiple values. It's the preferred format for RDF data exchange, ontology editing (Protégé), and SPARQL endpoint data dumps.
Encode any text, including emojis and foreign scripts, into a Base64 string. Perfect for data URLs. Local.
Decode a Base64 encoded string that contains UTF‑8 text (emojis, international characters). See the raw output. Local.
Change audio files between MP3, WAV, FLAC, and OGG. Choose codec and bitrate. Works completely offline in the browser.
Paste raw email headers and see authentication results (SPF, DKIM, DMARC) in a readable table. Find spoofing attempts.
Translate text into semaphore flag positions and decode semaphore back to letters. Interactive animated flags. For scouts and maritime fans.
Convert WAV audio files to MP3 directly in your browser using a built‑in codec. Choose bitrate and quality. No upload.
Paste a string and verify if it is valid Base64. Auto‑detects padding issues and character errors. Quick dev check.
Paste a Bitcoin, Ethereum, or other crypto wallet address and quickly verify its format and checksum. No connection to blockchain.
Convert English words into their International Phonetic Alphabet (IPA) representation. For pronunciation learning. Local.
Encode any file into a Base64 string that you can copy, or decode a Base64 string back to a downloadable file. Pure frontend.
Validate a DNSSEC chain by entering DS and RRSIG records. Verify that signatures match. Educational. Local algorithm.
Convert numbers between binary, octal, decimal, hex, and any custom base up to 36. With live preview of all bases.
Lay down a beat on a grid sequencer for kick, snare, and hi-hat. Play, loop, and adjust tempo. All sound via Web Audio API.
Enter a domain and see its SSL certificate details: issuer, validity dates, and chain. Client‑side fetch.
Apply compression and limiting to an audio file with threshold, ratio, attack, and release controls. Improve loudness. All local.
Inspect any website's SSL/TLS certificate details: issuer, expiry date, subject, and SANs. Verify certificate chains. All checks are private and require no server upload.
Check which cipher suites a website supports and identify weak or outdated ones. Quick security audit from your browser.
Visualize the probability distribution of dice rolls as a color‑coded heatmap. For any NdM combination. RPG strategist's dream.
Log the hours you slept each night and rate the quality. See a weekly bar chart. Local storage.
Log daily sleep to see cumulative sleep debt or surplus over weeks. Visualizes chronic sleep loss trends. Stores data locally in your browser only.
Load a video and visually check if audio aligns with lips. Use frame‑by‑frame stepping. Debug playback issues.
Start/stop timer per project to log hours. See daily and weekly totals. Data stays in localStorage. Export summary as CSV. No account needed.
Use a coin for scale and log the size of swelling after an insect sting over time. Detect allergic progression.
Tap any key to the beat and get the BPM (beats per minute). Useful for DJs, musicians, and running. Simple and accurate.
Set your desired retirement date and see a live countdown of remaining days, hours, minutes. Totally motivating.
Type a negative thought and see which cognitive distortion it matches. Get a suggestion for reframing. Self-help tool.
Track up to 5 habits with a visual chain. Tap to mark day as done, see longest streaks. Data saved in your browser. Inspired by 'Don't break the chain' method.
Click a metal ion to see the characteristic flame color and wavelength. Useful for analytical chemistry reference.
Display striped patterns that can cause visual distortion. Learn about visual stress. Switch colors.
Compare all CSS easing presets side by side on a bouncing ball. See which curve fits your UI animation.