Top Dev Tools APIs on API.market

Browse our collection of high-quality Dev Tools APIs

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Code & formatting
5.0(4)

Free, Effortless Image & Video Upload and Retrieval Service

1.1Kโ€ข616.6K
1M FREE API units
Parsing & extraction
0.0(0)

Dirty spreadsheets in โ†’ schema-validated rows + JSON errors. API and agents only โ€” no iframe.

1โ€ข12
$29/month
URL & QR utilities
0.0(0)

Turn any public URL into link-preview JSON: Open Graph, Twitter Card, JSON-LD, favicon and logos.

1โ€ข10
1K FREE API units
Parsing & extraction
0.0(0)

Harmonize incompatible Parquet schemas automaticallyโ€”free for ordinary unions, pay only when residual reconciliation is needed.

2โ€ข6
$0.03 per API unit
URL & QR utilities
0.0(0)

Pre-flight validation for autonomous agents: check URLs, wallet balances, gas conditions and execution assumptions before a costly action.

1โ€ข5
$0.025 per API unit
Parsing & extraction
0.0(0)

Check WordPress plugin releases for update risk before deployment.

1โ€ข3
100 FREE API units
developer-tools
0.0(0)

Color generation, conversion, contrast checking, and palette generation

1โ€ข16
100 FREE API units
Document & PDF tools
0.0(0)

Fast, accurate text extraction and line-by-line diff generation for PDF documents with precise change metrics.

1โ€ข5
50 FREE API units
Parsing & extraction
0.0(0)

Expand an iCalendar RRULE into occurrence timestamps between a start and end time. Built for calendar, scheduling, and reminder apps.

2โ€ข14
500 FREE API units
Document & PDF tools
0.0(0)

Generate print-ready Avery-compatible label PDFs from structured data or imported files.

2โ€ข14
50 FREE API units
URL & QR utilities
0.0(0)

Generate barcode images in PNG or base64. Supports Code128, EAN13, and EAN8 formats.

1โ€ข4
$10/month
URL & QR utilities
0.0(0)

Rapidly perform diverse encoding, conversion, generation, and security tasks with this high-performance, zero-dependency multi-tool API.

1โ€ข8
$25/month
Parsing & extraction
0.0(0)

Inspect public pages for forms, API and webhook signals, security headers, robots rules, latency, and automation-readiness risks.

1โ€ข9
$0.04 per API unit
Screenshot & capture
0.0(0)

Capture full-page screenshots, extract clean article text, and generate extractive summaries efficiently with the versatile Webcontent API.

2โ€ข13
100 FREE API units
Parsing & extraction
0.0(0)

Instantly parse any user agent string to precisely extract browser, OS, device type, and version, supporting all major platforms.

1โ€ข3
100 FREE API units
Code & formatting
0.0(0)

Efficiently generate RFC-compliant UUIDs, supporting versions 1 (time-based) and 4 (random), with powerful batch generation of up to 100 per request.

1โ€ข5
100 FREE API units
Code & formatting
0.0(0)

Instantly convert text to URL-friendly slugs, masterfully handling Unicode, special characters, and diverse languages for robust, consistent web links.

1โ€ข6
100 FREE API units
Code & formatting
0.0(0)

Generate up to 100 realistic fake user profiles instantly, complete with comprehensive details like name, email, and job, perfect for rapid prototyping and robu

1โ€ข3
100 FREE API units
URL & QR utilities
0.0(0)

Generate QR codes instantly from text or URL, returning high-performance PNG or Base64 for quick embedding and downloads.

1โ€ข3
100 FREE API units
Document & PDF tools
0.0(0)

Swiftly extract clean, paginated text from PDFs using direct upload or URL, powered by a fast PyMuPDF backend.

1โ€ข3
100 FREE API units
Code & formatting
0.0(0)

Automatically optimize Python data types and database schemas to reduce storage 30-75%, cutting cloud bills and speeding up applications effortlessly.

1โ€ข8
$19/month
Parsing & extraction
0.0(0)

Convert across 19 unit categories with auto-detection, compound parsing, batch, locale formatting, and cooking conversions. Stateless and fast.

2โ€ข10
100 FREE API units
Code & formatting
0.0(0)

Generate comprehensive SEO, performance, and content reports for any URL. Export structured JSON reports with actionable insights in one API call.

2โ€ข0
50 FREE API units
Code & formatting
0.0(0)

The Vector Search API enables users to discover free-to-use vector icons from a vast library of over 700,000+ icons. Each icon is accompanied by a license type.

5โ€ข1
1.5K FREE API units
Code & formatting
0.0(0)

Generate unique, stylized character avatars from text prompts in seconds with Tencent's Instant Character AI modelโ€”ideal for games, media, and apps.

6โ€ข0
$0.05 per API unit
Storage & key-value
0.0(0)

The Store Key-Value API is a lightweight, high-performance cloud-based storage solution that enables developers to store, retrieve, and manage key-value pairs.

7โ€ข2
100 FREE API units
URL & QR utilities
0.0(0)

Instantly shorten long URLs with impressive speed, enhancing user experience across platforms with ease.

1โ€ข1
$6/month
Code & formatting
0.0(0)

Get an instant SEO snapshot of any URL. Returns SEO score, title, meta tags, headings, word count, load speed & key on-page signals in one API call.

4โ€ข0
50 FREE API units
Code & formatting
0.0(0)

Analyze websites in real-time for comprehensive SEO insights, delivering a score, identifying issues, and suggesting fixes for enhanced search performance.

2โ€ข6
500 FREE API units
Code & formatting
0.0(0)

Audit any URL for on-page SEO issues. Extract title tags, meta descriptions, headings, internal links, image alt text & SEO health score. JSON output, free tier

1โ€ข0
50 FREE API units
Parsing & extraction
0.0(0)

Fetch and parse XML sitemaps for any domain. Extract all URLs, detect sitemap indexes, and validate structure for SEO audits and web crawlers.

1โ€ข0
50 FREE API units
Parsing & extraction
0.0(0)

Detect and extract all schema.org structured data from any webpage โ€” JSON-LD, Microdata, RDFa. Identify Article, Product, FAQ, Review & more.

1โ€ข0
1K FREE API units
Storage & key-value
0.0(0)

The Read Key-Value API provides a fast, cloud-based storage solution that allows users to retrieve values by specifying unique keys.

5โ€ข4
1.5K FREE API units
Code & formatting
0.0(0)

The Image to ASCII Art by URL API converts remote images into text-based ASCII representations, making it ideal for command-line interfaces, creative projects.

2โ€ข1
1.5K FREE API units
Code & formatting
0.0(0)

Expand images beyond their borders in high resolutionโ€”generate new pixels for flawless, seamless resizing in seconds with licensed commercial-safe AI.

3โ€ข6
$0.05 per API unit
Code & formatting
0.0(0)

Rapidly create detailed 3D assets for games, AR & design with Trellisโ€”state-of-the-art AI for fast, production-ready results.

8โ€ข546
20 FREE API units
URL & QR utilities
0.0(0)

Create QR codes in various formats (SVG, PNG, base64) with lightning-fast performance and custom error correction levels.

1โ€ข4
3K FREE API units
Document & PDF tools
0.0(0)

Identity Document Verification Reference

1โ€ข10
$29/month
Code & formatting
0.0(0)

Generate classic โ€œLoremโ€ฏipsum dolor sit ametย โ€ฆโ€ in any length with a single REST call. Free tier, simple auth, instant JSON output for dev, QA and design teams.

3โ€ข0
1K FREE API units
Code & formatting
0.0(0)

Uncover website technologies with DNS, TLS, and HTTP analysis, featuring fast CPE identification for enhanced security insights.

2โ€ข4
100 FREE API units
Code & formatting
0.0(0)

The Convert Units API provides a simple and efficient way to convert measurements across multiple unit types, including weight, length, temperature, and more.

2โ€ข1
1.5K FREE API units
Parsing & extraction
0.0(0)

Extract contact details from any webpage โ€” emails, phone numbers, social links, address & contact forms. Ideal for lead gen and outreach.

3โ€ข0
50 FREE API units
Code & formatting
0.0(0)

Save time and effort in coding: Use the Coding Assistant API for intelligent completion, highlighting, and correction tools across multiple programming language

21โ€ข1.1K
100 FREE API units
Screenshot & capture
0.0(0)

Capture lightning-fast, pixel-perfect website screenshots, automatically blocking cookie banners and popups with WebShot API, delivering raw images or cached li

1โ€ข5
100 FREE API units
Document & PDF tools
0.0(0)

Stop yak-shaving, generate a PDF now!

5โ€ข6
200 FREE API units
URL & QR utilities
0.0(0)

Generate customized, scalable QR codes: Integrate our API for efficient and reliable QR code implementation.

46โ€ข23.4K
10 FREE API units
Document & PDF tools
0.0(0)

PPT Generation using AI.

0โ€ข0
$49/month