Image
MOV to JPG Converter
Save a frame from a local MOV video or extract a short sequence.
JBR / TOOLS COMMAND CENTER
What needs doing?
Make an image fit. Inspect your firmware. Work out your profit.
31 tools. Zero accounts.30 browser-only utilities + an ESP workbenchNo uploads. Your work stays with you.
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31 tools
Developer
JWT Decoder
Read a token’s claims and UTC expiration locally.
Image
Batch Image Converter
Convert a set of local images to PNG, JPEG, or WebP.
Image
Image Cropper
Frame a local image with touch or keyboard controls.
Image
Image Format Converter
Convert a local image to PNG, JPEG, or WebP.
Developer
Diff Viewer
Compare two texts line by line with inline changes.
Developer
Regex Tester
Test JavaScript patterns, inspect capture groups, and preview replacements.
Seller
eBay Fee & Profit Calculator
Estimate what stays with you after fees and costs on one US eBay sale.
Security
Password Generator
Create a fresh, random password with character choices that fit the site you’re using.
Utility
Random Number Generator
Pick a number, roll a die, or draw a whole set.
Text
Word Counter
Count words, characters, and sentences.
Text
Text List Cleanup
Trim, deduplicate, change case, and sort a pasted list while preserving the original input.
Developer
JSON Formatter
Validate, format, minify, and sort JSON.
Image
Color Picker from Image
Sample a picture, find its dominant colors, and export a palette.
Image
Image Resizer
Resize, pad, or crop a local image.
Image
Image Compressor
Re-encode JPEG, PNG, or WebP locally and compare the actual sizes.
Image
EXIF / Metadata Remover
Inspect common tags and export fresh, oriented pixels without copying original EXIF, GPS, or text metadata.
Image
Favicon Generator
Make six PNG icon sizes, a favicon.ico where supported, and a starter manifest.
Developer
UUID Generator
Make a fresh version 4 ID, or a batch of a thousand.
QR
QR Code Generator
Create a local QR code for a URL, text, Wi-Fi, email, or SMS.
Developer
Unix Timestamp Converter
Convert seconds, milliseconds, ISO dates, and calendar time.
Developer
Encoding Toolkit
Encode or decode UTF-8 Base64 and URL text locally.
Hardware / ESP
Firmware Hash / Checksum Verifier
Compare a local file with a trusted SHA-256, SHA-384, or SHA-512 checksum, or compare two local files byte for byte.
Hardware / ESP
ESP Flasher
Flash firmware and open a serial console for your connected ESP board.
Hardware / ESP
ESP Binary Inspector
Inspect local ESP firmware headers, segments, chip fields, checksum, and appended digest.
Hardware / ESP
ESP Partition Table Inspector
Read ESP-IDF CSV or binary partition tables.
Hardware / ESP
ESP Flash Address Planner
Place firmware files by address and size.
Maker
3D Print Cost Calculator
Calculate filament, electricity, machine time, labor, waste, and fees.
Maker
Filament Remaining Calculator
Weigh a spool or enter grams remaining.
Maker
Resin Print Cost Calculator
Account for resin, cleanup supplies, power, machine time, labor, and fees before choosing a sale price.
Maker
Dimensional & Scale Calculator
Convert a target dimension, model scale, or percentage into a proportional X/Y/Z resize with common length units.
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