devtoolsforme
Quick browser tools for developer workflows.
Search, open, and use the tool you need without leaving the tab. General utilities, data helpers, and embedded workflows are all client-side.
Embedded quick access
Advanced firmware helpers, without the clutter.
Registers
bitmasks, fields, signed values
Firmware
HEX, S-record, memory inspection
Timing
UART, PLL, DMA, timers
Protocols
CRC, CAN, Modbus, buses
Bitmask Calculator
Set, clear, toggle, and inspect register bits across 8, 16, and 32-bit values.
Open toolInteger Type Ranges
Reference min and max values for common fixed-width signed and unsigned C integer types.
Open toolEndianness Converter
Flip byte order between big-endian and little-endian representations.
Open toolCRC Calculator
Calculate CRC-8, CRC-16 Modbus, and CRC-32 checksums for embedded payloads.
Open toolShowing
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Identity
1 tools
Embedded
25 tools
Bitmask Calculator
Set, clear, toggle, and inspect register bits across 8, 16, and 32-bit values.
Open toolInteger Type Ranges
Reference min and max values for common fixed-width signed and unsigned C integer types.
Open toolEndianness Converter
Flip byte order between big-endian and little-endian representations.
Open toolCRC Calculator
Calculate CRC-8, CRC-16 Modbus, and CRC-32 checksums for embedded payloads.
Open toolStruct Padding Visualizer
Estimate offsets, alignment, and padding for common fixed-width fields in C structs.
Open toolUART Baud Calculator
Estimate baud register divisors, actual baud rates, and error percentages.
Open toolMemory Viewer
Inspect raw hex bytes as offsets, grouped hex, and printable ASCII.
Open toolASCII Hex Byte Converter
Convert strings into byte values, hex bytes, and C-friendly representations.
Open toolC Escape Generator
Turn text into escaped C string literals or explicit hex escape sequences.
Open toolC Array Generator
Generate C byte arrays from text or turn uploaded images into SSD1309-ready monochrome bitmaps.
Open toolFixed-Point Converter
Convert decimal values into scaled fixed-point integers using configurable Q formats.
Open toolTimer Prescaler Calculator
Estimate timer tick periods, interrupt intervals, and resulting frequencies.
Open toolCAN Frame Helper
Inspect simple CAN ID, frame type, DLC, and data byte layouts.
Open toolModbus RTU Helper
Build Modbus RTU frames, append CRC bytes, and exchange them over a local serial port.
Open toolSPI I2C Cheatsheet
Reference SPI modes, convert I2C addresses, and estimate practical pull-up values.
Open toolLogic Level ADC DAC Converter
Translate voltages into ADC counts and back using your selected reference.
Open toolEmbedded Unit Converter
Convert between Hz, kHz, MHz and ns, us, ms for common firmware calculations.
Open toolIEEE-754 Float Inspector
Inspect a float as hex plus its sign, exponent, and mantissa fields.
Open toolTwo's Complement Converter
Interpret integer values as signed, unsigned, binary, and hex across common widths.
Open toolC Preprocessor Expression Evaluator
Evaluate macro-style numeric expressions with shifts, masks, and arithmetic.
Open toolRegister Field Builder
Pack and extract bitfields by offset and width while seeing masks and shifted values immediately.
Open toolPLL Calculator
Estimate VCO and final output clocks while exploring pre-dividers, multipliers, and post-dividers.
Open toolDMA Throughput Calculator
Estimate burst count, cycle overhead, transfer time, and throughput for DMA moves.
Open toolIntel HEX Inspector
Parse Intel HEX firmware records, inspect absolute addresses, and catch checksum errors.
Open toolS-Record Inspector
Decode Motorola S-record files, inspect addresses, and validate record checksums.
Open toolEncoding
5 tools
Base64 Encoder
Encode or decode text with UTF-8 support without leaving the browser.
Open toolURL Encoder
Encode and decode URLs, query strings, and reserved characters for safer sharing.
Open toolURL Parser
Break down a URL into protocol, host, path, parameters, and fragment parts instantly.
Open toolQuery Param Editor
Build and edit URLs with query parameters without hand-editing long strings.
Open toolHTML Entity Tool
Encode text into HTML entities or decode escaped markup back into readable text.
Open toolMath
2 tools
Data
6 tools
JSON Formatter
Validate, prettify, and minify JSON with clear error feedback for malformed input.
Open toolJSON Diff
Compare two JSON documents side by side and quickly spot structural or value changes.
Open toolJSON to TypeScript
Turn sample JSON into a fast starter TypeScript type definition.
Open toolProtobuf Parser
Validate a provided .proto schema and parse protobuf payloads as JSON, hex, or Base64.
Open toolTimestamp Converter
Move between Unix timestamps and readable dates with UTC and local time views.
Open toolCron Parser
Read a cron expression field by field so schedules become easier to verify.
Open toolNetwork
1 tools
Security
5 tools
Hash Generator
Generate SHA hashes in the browser for quick integrity checks and comparisons.
Open toolTLS Key Generator
Generate RSA keypairs and symmetric secrets directly in the browser, with PEM and raw encodings.
Open toolCertificate Inspector
Parse PEM certificates to inspect issuer, subject, SANs, validity, key usage, and fingerprint values.
Open toolCSR Generator
Generate a private key and certificate signing request with subject and SAN fields.
Open toolJWT Decoder
Inspect JWT headers and payloads locally, with readable expiry and issue times.
Open toolText
3 tools
Case Converter
Flip text between camelCase, PascalCase, snake_case, kebab-case, and more.
Open toolRegex Tester
Test expressions against sample text, review flags, and inspect captured matches.
Open toolText Diff
Compare two blocks of text line by line and spot changed, added, or removed content.
Open toolContent
1 tools
Reference
2 tools
Design