Network and DevOps Tools
- Calculate IPv4 subnet ranges
- Look up HTTP status meanings quickly
- Inspect payloads, user agents, hex bytes and docker command conversions
A technical guide to hexadecimal inspection, byte order, file signatures, BOM markers, and why byte-level debugging helps with format problems.
From docker run to Compose: What Each Flag Really MeansA technical guide to translating docker run commands into Compose services while preserving ports, volumes, environment variables, restart rules, and secrets.
Reading CIDR Notation: Prefixes, Hosts, and Range ChecksWhat the number after the slash means, how many addresses a prefix really gives you, and how to check whether an address falls inside a range.
Protocol Buffers Explained: Schemas, Field Numbers, and Binary DebuggingA technical introduction to protobuf payloads, why schemas are required, how field numbers work, and what to inspect when binary messages fail.
Format JSON, XML, YAML, TOML, encode text, inspect headers, and validate technical data quickly.
Data Format Conversion ToolsConvert and inspect JSON, CSV, XML, YAML, TOML, colors, text encodings, and structured data.
File and Binary Inspection ToolsInspect file types, bytes, Hex, Protobuf payloads, ASCII, and binary-friendly formats in the browser.
Tools In This Collection
IP / CIDR Calculator
Calculate network address, subnet mask, host range and wildcard mask for IPv4 CIDR blocks.
HTTP Status Code Lookup
Search and filter common HTTP status codes with bilingual explanations, categories and troubleshooting hints.
Base Converter
Convert numbers across bases and transform text into hex, binary, Base64 and Unicode bytes.
Protobuf Encoder / Decoder
Encode JSON into Protobuf bytes or decode hex / Base64 Protobuf payloads with a .proto schema in the browser.
Docker Run to Compose
Convert common docker run commands into a starter docker-compose service block.
Random User-Agent Generator
Generate common desktop and mobile User-Agent strings for testing requests and client detection logic.
File Type Detector
Inspect a file in the browser and identify common formats from extension, MIME type and magic bytes.
Hex Editor
Inspect text or files as hex bytes, edit hexadecimal content, and decode it back to text locally in the browser.
HTTP Request Header Reference
Look up common HTTP request headers and quickly review client, auth and caching related fields.
HTTP Response Header Reference
Browse common HTTP response headers, understand caching, security and delivery-related fields.
MIME Type Reference
Look up common MIME types, file extensions and browser-facing content-type values in one fast table.