Experience-first
developer toolkit
40+ carefully crafted online tools covering JSON, crypto, encoding, API editing, and network diagnostics. Zero install — open and use.
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Find the Tool You Need
40+ tools, 10+ categories — scan and see if we have what you need
Beautify & compress JSON, syntax highlight, tree view. Handles 100k+ lines.
JSON ↔ YAML / XML / CSV / TOML / Properties — 7 formats, two-way edit.
Visual JSON Schema designer, drag & drop fields, build API structures.
AES-128/192/256, CBC/ECB/CTR/CFB/OFB modes.
SM2 elliptic curve encryption, GB/T 32918 standard.
SM3 hash algorithm, 256-bit output, GB/T 32905 standard.
SM4 symmetric encryption, 128-bit key, GB/T 32907 standard.
MD5 hash for strings and files, uppercase / lowercase output.
SHA-1 / SHA-224 / SHA-256 / SHA-384 / SHA-512 hash calculation.
HMAC-SHA signature for API request signing and data integrity.
RSA 1024–4096 bit, PKCS#1 / PKCS#8 formats.
ECC P-256 / P-384 / P-521 curves, ECIES encryption scheme.
DES and Triple DES, CBC / ECB modes, legacy compatibility.
RC4 stream cipher, variable key length, fast and efficient.
Rabbit stream cipher, 128-bit key, eSTREAM portfolio winner.
Text / file Base64 encode & decode, URL-safe mode supported.
URL encode / decode, handles special characters correctly.
Char ↔ ASCII, decimal / hex / binary / octal formats.
Text ↔ Unicode, JS / Python / HTML / CSS / URL, full Emoji support.
One-click query for your current public IP, IPv4 & IPv6.
Query IPv4 geo location: country, city, ISP, timezone.
Query A / AAAA / MX / CNAME / TXT DNS records.
Calculate IP ranges, subnet masks, network and broadcast addresses.
KB / MB / GB / TB unit conversion, binary and decimal modes.
Check SSL certificate expiry, issuer and chain integrity.
Parse local SSL certificate files, view expiry and signature info.
Generate self-signed SSL certs for dev / test HTTPS environments.
Validate crontab expressions and preview next execution times.
Visual OpenAPI 3.x editor, export HTML / PDF, save to cloud.
Convert cURL to 20+ languages: Fetch, Axios, Python, Go and more.
Build HTTP requests visually, generate cURL commands with auth support.
Generate, parse and verify JWT tokens. HS256 / RS256 and more.
Visual table design, export CREATE SQL or MyBatis code.
CSV / JSON visual editor, sort, filter, export JSON / CSV / Excel / PDF.
Unix timestamp ↔ readable time, ms precision, batch extract.
Calculate time difference: years / months / days / hours / minutes / seconds.
200+ global cities, real-time multi-timezone comparison with DST.
85 core Linux commands with syntax, params and real-world examples.
36 Git commands: branch, merge, rebase and rollback workflows.
47 Docker / Compose commands: containers, images, volumes, networks.
40 kubectl commands for cluster management and troubleshooting.
17 Java tool commands: JVM debug, profiling, packaging.
39 Redis commands covering strings, hashes, lists, sets and more.
34 Nginx directives: reverse proxy, load balancing, config guide.
38 SQL syntax essentials: queries, joins, functions, constraints.
68 HTTP status codes 1xx–5xx, including Nginx / IIS extensions.
JWT working principles, use cases, and example code.
Personal command memo — save and manage your shell snippets online.
WYSIWYG Markdown editor, Mermaid diagrams, multiple themes.
Highlight differences between two text blocks. Great for config review.
Case conversion, deduplicate lines, sort, split and merge text.
Generate UUID v1–v8 and Nil UUID in bulk, one-click copy.
Generate GUIDs for Windows dev, database PKs, distributed systems.
Configurable strength, length, charset secure password generator.
Generate RSA, Ed25519, ECDSA SSH key pairs, multiple export formats.
Why Tools.Top
Experience IS the Product
There are many similar tools out there, but the experience varies wildly. Tools.Top aims to be the best-crafted developer toolkit — every tool is thoughtfully designed, no compromises.
Paste it in, instantly see the structure. No hunting for tools, no waiting for loads, no guessing what comes next.
Handles Real Production Data
JSON formatter handles 100k+ lines. Timestamp tool supports bulk extraction from JSON / YAML / XML files.
Handles real production data, not just toy demos — that's what a real tool does.
Gov Crypto Compliance, Done
Built-in SM2 / SM3 / SM4 government crypto algorithms, meeting domestic compliance requirements. No need for a separate specialized tool — one stop.
For devs in finance, government, or healthcare: we have what you need.
Use Cases
Real Developer Scenarios
Do these scenarios sound familiar? You probably hit them every week.
Debugging APIs, Wrangling JSON
Production returned a minified JSON blob. Paste it in the JSON formatter, instantly see the structure, pin down the problem field in seconds.
Implementing Request Signing
Can't remember the parameter order and encoding rules? Open the HMAC tool, paste the key and data, get the correct signature instantly — no more digging through docs.
Designing a Database Schema
Use MySQL Designer to visually define fields and indexes, export CREATE TABLE SQL or generate MyBatis code with one click.
Open and Use — Try it Now
Zero install, zero registration. Open your browser and start.
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