Things I've built, things I'm still building, and some notes on how they went.https://nirlever.com/https://nirlever.com/tools/color-tools/https://nirlever.com/tools/color-tools/Convert colors between HEX, RGB, HSL, HSV, CMYK and OKLCH, check text contrast, build palettes and pull colors out of a photo.Sun, 01 Nov 2026 00:00:00 GMTcolordesignaccessibilityhttps://nirlever.com/tools/currency-converter/https://nirlever.com/tools/currency-converter/Convert between 30 major currencies with the European Central Bank's daily rates and see how a rate has moved.Sun, 01 Nov 2026 00:00:00 GMTmoneyconvertertravelhttps://nirlever.com/tools/diff-checker/https://nirlever.com/tools/diff-checker/Paste two versions of a text and see exactly which lines and words changed.Sun, 01 Nov 2026 00:00:00 GMTtextcomparedeveloperwritinghttps://nirlever.com/tools/encode-decode/https://nirlever.com/tools/encode-decode/Base64, URL and HTML encoding, MD5 and SHA checksums, a JWT reader and a UUID generator in one place.Sun, 01 Nov 2026 00:00:00 GMTdeveloperbase64hashsecurityhttps://nirlever.com/tools/image-tools/https://nirlever.com/tools/image-tools/Shrink, resize and convert batches of images to JPG, PNG or WebP, and download them one by one or as a zip.Sun, 01 Nov 2026 00:00:00 GMTimagescompressionconverterhttps://nirlever.com/tools/json-tools/https://nirlever.com/tools/json-tools/Format, check and minify JSON, and convert between JSON and CSV spreadsheets.Sun, 01 Nov 2026 00:00:00 GMTjsoncsvdeveloperdatahttps://nirlever.com/tools/password-generator/https://nirlever.com/tools/password-generator/Strong random passwords and easy-to-remember passphrases, made on your own device, plus a private strength check.Sun, 01 Nov 2026 00:00:00 GMTsecuritypasswordsgeneratorhttps://nirlever.com/tools/pdf-tools/https://nirlever.com/tools/pdf-tools/Merge PDFs, pull out or split pages, rotate pages and turn photos into a PDF, all without uploading anything.Sun, 01 Nov 2026 00:00:00 GMTpdfdocumentsconverterhttps://nirlever.com/tools/qr-code/https://nirlever.com/tools/qr-code/Make QR codes for links, text, Wi-Fi, contacts, emails and texts, then download them as PNG or SVG.Sun, 01 Nov 2026 00:00:00 GMTqrgeneratorimageshttps://nirlever.com/tools/screen-recorder/https://nirlever.com/tools/screen-recorder/Record your screen, a window or a browser tab with sound and your microphone, and save the video to your computer.Sun, 01 Nov 2026 00:00:00 GMTvideorecordingscreenhttps://nirlever.com/tools/text-tools/https://nirlever.com/tools/text-tools/Count words, characters and reading time, and tidy up text with one click.Sun, 01 Nov 2026 00:00:00 GMTtextwritingcounterhttps://nirlever.com/tools/time-tools/https://nirlever.com/tools/time-tools/See a time in several cities at once, turn Unix timestamps into dates and back, and count the days between two dates.Sun, 01 Nov 2026 00:00:00 GMTtimeconverterdeveloperhttps://nirlever.com/tools/unit-converter/https://nirlever.com/tools/unit-converter/Length, weight, temperature, volume, speed, data, pressure, energy, fuel economy and cooking measures, all side by side.Sun, 01 Nov 2026 00:00:00 GMTconverterunitscalculatorhttps://nirlever.com/tools/url-shortener/https://nirlever.com/tools/url-shortener/Turn a long web address into a short link you can share, print or put in a QR code.Sun, 01 Nov 2026 00:00:00 GMTlinksgeneratorhttps://nirlever.com/tools/weather/https://nirlever.com/tools/weather/Current weather, the next 24 hours and a 7-day forecast for any place, with no ads and no account.Sun, 01 Nov 2026 00:00:00 GMTweathermapstravelhttps://nirlever.com/projects/gamebeb/https://nirlever.com/projects/gamebeb/A handheld e-ink puzzle console with 18 logic games and an endless supply of fresh puzzles, generated on the device itself.Fri, 07 Aug 2026 00:00:00 GMThardwaree-inkgames3d-printinghttps://nirlever.com/projects/voyaprint/https://nirlever.com/projects/voyaprint/Turns a real trip, from your phone's location history, a GPX track or your photos, into a 3D-printed relief map of the land you crossed.Sat, 18 Apr 2026 00:00:00 GMT3d-printingmapswebsaashttps://nirlever.com/projects/sttpro/https://nirlever.com/projects/sttpro/Hold a key, speak, and your words appear wherever you were typing, in any Windows app. Optional smart prompts tidy, summarize or translate them on the way.Fri, 13 Mar 2026 00:00:00 GMTdesktopwindowsspeechproductivityhttps://nirlever.com/tools/sttpro/https://nirlever.com/tools/sttpro/A free Windows app that turns your voice into text in any app, with one hotkey and your own speech service.Fri, 13 Mar 2026 00:00:00 GMTwindowsspeechproductivityhttps://nirlever.com/projects/nearrator/https://nirlever.com/projects/nearrator/An AI receptionist that answers a small business's phone in Hebrew, books, takes callbacks and hands off to a human. Built, then shelved before launch.Sun, 11 Jan 2026 00:00:00 GMTaivoicesaastelephonyhttps://nirlever.com/projects/hoverscribble/https://nirlever.com/projects/hoverscribble/Draw, point and explain on top of anything on your screen, for teachers, presenters and streamers. Windows and Mac, bought once.Fri, 19 Dec 2025 00:00:00 GMTdesktopwindowsmacosteaching