DevToolStack - Free Online Developer Tools for SQL, APIs and Backend

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A growing toolkit for common developer tasks

Use the dashboard to jump into the right task, whether you are working with database scripts, UUID generation, cron schedules, regex validation, timestamp conversion, hash verification, JSON payloads, SQL formatting, encoders, decoders, URL inspection, cURL conversion, or backend debugging. The homepage stays broad while each tool page is optimized for its own search intent.

Database utilities
Data formatters
Backend helpers

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Built as a multi-tool platform

Every tool is hosted under the same domain using clean paths such as /sql-formatter/, /regex-tester/, /timestamp-converter/, /hash-generator/, /jsonformatter/, /textcompare/, /xml-formatter/, /base64-tool/, /uuid-generator/, /cron-parser/, /html-encoder-decoder/, /url-parser/, /curl-to-fetch/, /url-encoder-decoder/, /jwt-decoder/, /yaml-formatter/, and /unwrapplsql/. This keeps the brand centralized while giving each utility a dedicated landing page.

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Tool dashboard

Developer utilities in one place

Use the dashboard to jump directly into formatting, comparison, decoding, validation, parsing, generation, and inspection tasks. The tool pages target specific workflows while the guide section continues to grow around the most searched developer use cases.

SQL Formatter

Format SQL and PL/SQL scripts with readable indentation, dialect support, and keyword normalization.

Regex Tester

Test regular expressions with flag controls, highlighted matches, and captured result review.

Timestamp Converter

Convert Unix seconds, Unix milliseconds, ISO strings, and local date values instantly.

Hash Generator

Create MD5, SHA-1, and SHA-256 hashes quickly for debugging, verification, and checksums.

UnwrapPLSQL

Online Oracle PL/SQL unwrap tool for wrapped packages, functions, procedures, and package bodies.

JSON Formatter

Beautify, validate, minify, upload, search, copy, and download JSON payloads for APIs and logs.

Text Compare

Compare text, code, logs, SQL, JSON, and configuration files with side-by-side and unified diff views.

XML Formatter

Format XML, SOAP payloads, and config files online with beautify, minify, and validation support.

Base64 Encoder & Decoder

Encode plain text to Base64 or decode Base64 strings for tokens, headers, payloads, and debugging.

UUID Generator & Validator

Generate UUID v4 values, validate pasted UUID strings, and normalize ID lists for APIs and databases.

Cron Parser & Generator

Parse cron expressions into readable schedules and build clean recurring job strings for automation.

HTML Encoder & Decoder

Escape HTML entities or decode escaped markup quickly for templates, payloads, and frontend debugging.

URL Encoder & Decoder

Encode query strings, URLs, and API parameters or decode percent-encoded values for debugging.

URL Parser & Query Params Viewer

Inspect full URLs, decode query parameters, and review host, path, fragment, and repeated keys.

cURL to Fetch Converter

Turn cURL commands into browser-ready JavaScript fetch code for API docs, debugging, and frontend work.

JWT Decoder

Decode JWT header and payload claims for auth debugging, expiration checks, and token inspection.

YAML Formatter

Format YAML, validate config files, and normalize manifests for Kubernetes, CI, and app settings.

Guides and learning

Helpful developer references

Internal links help users and search engines discover practical content connected to each tool.

PL/SQL workflow

How to Unwrap Oracle PL/SQL

Learn what wrapped PL/SQL is, when unwrapping is appropriate, and how to use an online PL/SQL unwrapper safely.

JSON workflow

How to Format JSON Online

Format, validate, minify, and review JSON payloads with a cleaner browser-based debugging workflow.

SQL workflow

Format SQL and PL/SQL Online

Clean up SQL queries, stored procedures, and PL/SQL blocks for review, debugging, and handoff.

Diff workflow

Compare Text and Code Online

Review code, logs, JSON, SQL, and config changes with side-by-side or unified diff workflows.

Regex workflow

Test Regex Patterns Online

Validate regular expressions against sample text with live highlighting before you commit them to code.

Time workflow

Convert Timestamps Online

Turn Unix, ISO, and local time values into readable output for logs, tokens, and API payloads.

Hash workflow

Generate Hashes Online

Create MD5, SHA-1, and SHA-256 values quickly when verifying payloads or comparing outputs.

XML workflow

Format XML and SOAP Online

Beautify SOAP payloads, config XML, and vendor messages while validating broken structures faster.

Base64 workflow

Encode and Decode Base64 Online

Encode plain text, decode API payload fragments, and inspect encoded headers without leaving the browser.

URL workflow

Encode and Decode URLs Online

Escape query strings, inspect callback parameters, and decode percent-encoded URLs for debugging.

JWT workflow

Decode JWT Tokens Online

Inspect token headers, payload claims, expiration times, issuers, and audiences during auth debugging.

YAML workflow

Format YAML Online

Normalize manifests, validate config files, and improve readability for CI, Kubernetes, and deployment workflows.

SEO content

Why developers use browser-based utility platforms

Developer work is full of small but recurring tasks: formatting SQL, validating JSON, decoding tokens, comparing configs, converting timestamps, inspecting encoded payloads, and cleaning XML or YAML. None of those tasks are usually the main project, but each one can block progress when the right utility is not immediately available. A browser-based platform helps by removing installation overhead, keeping tools one click away, and making repeat workflows easier to finish quickly.

That convenience matters most for backend engineers, database teams, support staff, QA analysts, consultants, and implementation teams who jump between logs, payloads, scripts, database consoles, tickets, and browser tabs all day. When a utility loads fast, has a clear editor layout, and supports copy or download actions, it becomes part of the normal workflow rather than a separate detour.

Tool families inside DevToolStack

DevToolStack is most useful when viewed as a set of focused workflow groups. Formatters such as SQL Formatter, JSON Formatter, XML Formatter, and YAML Formatter help normalize structured content. Inspection tools such as JWT Decoder, Base64 Encoder & Decoder, and Timestamp Converter help decode values and understand timing or auth data. Comparison and validation tools such as Text Compare and Regex Tester help teams review changes and verify parsing logic.

Oracle and PL/SQL workflows still matter, but they now sit inside a broader toolkit rather than dominating the whole homepage. Pages like UnwrapPLSQL and the UnwrapPLSQL guide handle their own deep-dive use case, while the homepage stays focused on the wider developer-utility platform.

Why dedicated landing pages and guides help

Each tool gets its own clean URL so search intent stays focused. Someone searching for SQL formatting should land on the SQL formatter page, while someone debugging JWT claims should land directly on the JWT decoder. That separation makes the platform easier to crawl and also makes the user experience better because every page can stay tightly matched to one job.

Guide pages strengthen that structure by answering the “how and when do I use this?” question that a utility page alone does not fully cover. Instead of forcing every explanation onto the homepage, DevToolStack can link users to dedicated references for SQL, regex, timestamps, hashes, JSON, XML, Base64, URLs, JWTs, YAML, text comparison, and Oracle PL/SQL maintenance workflows.

Benefits of a centralized developer tool platform

DevToolStack is built as one domain with clean path-based URLs such as /sql-formatter/, /textcompare/, /regex-tester/, /timestamp-converter/, /hash-generator/, /xml-formatter/, /base64-tool/, /url-encoder-decoder/, /jwt-decoder/, /yaml-formatter/, /jsonformatter/, and /unwrapplsql/. That keeps the brand unified while giving each task a dedicated page, dedicated metadata, and dedicated internal links.

The platform focuses on fast loading, semantic HTML, mobile-friendly layouts, clear headings, and crawlable links. Supporting trust pages such as About, Contact, Privacy, and Terms help round out the site, while guide pages give each core tool a stronger context layer. The homepage stays broad so visitors can discover the right utility quickly, and the deeper pages handle the specialized detail.