Top 5 Developer Tools You Should Bookmark

Most developer tools do one thing and do it well. The mistake is spending twenty minutes building a one-off script for a task you will do again next week. Here are five tools that earn their bookmark status.

1. JSON Formatter - Because Webhook Payloads Are Always Broken

JSON arrives minified. Every time. You paste it into your editor, you get one long line that your screen reader cannot parse and your brain cannot decode. A good JSON formatter takes that wall of text, adds indentation, sorts keys optionally, and validates the syntax in the process.

The best formatters tell you the exact line and character where parsing fails. That specificity matters. When your CI pipeline is red and you are staring at a minified error response from a third-party API, you want line 3, character 12 - not "somewhere in this block."

Toolblip's JSON Formatter does all of this and handles payloads up to several megabytes without freezing the tab.

2. Base64 Encoder - For Auth Headers and Token Inspection

Base64 comes up in three contexts: Basic auth headers (admin:password → YWRtaW46cGFzc3dvcmQ=), JWT payload inspection (decode the middle segment to read the claims), and embedding binary data in text formats.

A good Base64 tool handles both encode and decode directions, and supports URL-safe variants for JWT work. When a log shows you a token like eyJ1c2VyIjoiYWxpY2UifQ==, you paste it in and see {"user":"alice"} instantly.

Toolblip's Base64 tool runs client-side, so your tokens never hit a server.

3. Regex Tester - Because Reading Regex Without Testing Is Guesswork

Writing a regex pattern without a tester is like writing a function without running it. You think you know what it does. You do not know what it does until you see it match and fail against real text.

A regex tester lets you paste a pattern and a sample string, then highlights every match and shows capture groups inline. Toolblip's Regex Tester uses JavaScript flavor, supports all standard flags (g, i, m, s), and shows groups color-coded so you can verify which token captures what.

4. Cron Expression Parser - For Figuring Out What "0 9 * * 3" Actually Means

Cron expressions are terse and cryptic. 0 9 * * 3 means every Wednesday at 9:00 AM. */15 * * * * means every 15 minutes. But 0 0 1 * * and 0 0 * * 0 look similar until you realize one fires on the first of every month and the other fires every Sunday at midnight.

A cron parser takes an expression and shows you the next ten run times in human-readable format. This is genuinely useful when debugging scheduled jobs or reviewing a teammate's configuration. Toolblip's Cron Parser handles standard 5-field cron and shows a readable schedule before you deploy. If you need the field-by-field version, read the cron expression generator guide.

5. Hash Generator - For Checksums and Signed Requests

MD5, SHA-1, SHA-256, SHA-512. You need them for verifying file downloads, debugging HMAC signatures, and comparing outputs across systems. A hash generator takes a string or file, picks your algorithm, and returns the digest in one click.

Toolblip's Hash Generator supports all four algorithms, handles text input directly, and computes the digest entirely in-browser.

The Bookmark Bar Is Your Toolkit

These five tools cover roughly 70% of the small jobs that interrupt actual coding work. Bookmark them in a folder and they are two clicks away on any machine. No install, no update cycle, no version drift between you and your teammate.

Start with the JSON formatter - paste the next broken webhook payload you get and see if it makes debugging faster. It will.