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DevToolsmith

Full-stack dev building practical web tools. Creator of 6 products: ToolKit Online, CaptureAPI, CompliPilot, AccessiScan, ChurnGuard, DocuMint. Building in public.

Location EU Joined Joined on  Personal website https://toolkitonline.vip github website

Education

Self-taught developer

Work

Independent Developer — Building 6 SaaS Products

Stop Self-Hosting Headless Chrome Just to Take a Screenshot
toolkitonline profile

Stop Self-Hosting Headless Chrome Just to Take a Screenshot

#api #webdev #javascript #devops
Comments
3 min read
Stop Writing Regex for Invoices: Turn Any PDF Into Structured JSON With One API Call
toolkitonline profile

Stop Writing Regex for Invoices: Turn Any PDF Into Structured JSON With One API Call

#api #python #automation #webdev
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3 min read
Involuntary Churn Is Eating Your MRR: A Practical Guide to Recovering Failed Payments
toolkitonline profile

Involuntary Churn Is Eating Your MRR: A Practical Guide to Recovering Failed Payments

#saas #startup #stripe #webdev
Comments
3 min read
Accessibility Overlays Won't Pass a WCAG Audit. Here's What Actually Will.
toolkitonline profile

Accessibility Overlays Won't Pass a WCAG Audit. Here's What Actually Will.

#a11y #webdev #css #ux
Comments
3 min read
Your GDPR Audit Goes Stale the Moment You Ship — Here's How to Catch the Drift
toolkitonline profile

Your GDPR Audit Goes Stale the Moment You Ship — Here's How to Catch the Drift

#privacy #security #saas #webdev
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3 min read
Stop Hand-Designing Open Graph Images: Automate Link Previews for Every Page
toolkitonline profile

Stop Hand-Designing Open Graph Images: Automate Link Previews for Every Page

#webdev #api #javascript #programming
Image 2
Comments 1
3 min read
Why Your Webhook Returns 200 But Still Fails (and How to Actually Debug It)
toolkitonline profile

Why Your Webhook Returns 200 But Still Fails (and How to Actually Debug It)

#webdev #api #javascript #debugging
Comments
3 min read
You Set Up HTTPS. You Still Forgot These 5 HTTP Security Headers.
toolkitonline profile

You Set Up HTTPS. You Still Forgot These 5 HTTP Security Headers.

#security #webdev #devops #programming
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3 min read
Your structured data is probably broken, and your crawler isn't telling you
toolkitonline profile

Your structured data is probably broken, and your crawler isn't telling you

#seo #webdev #marketing #webperf
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3 min read
Why Your Emails Bounce (and How to Catch Bad Addresses Before You Hit Send)
toolkitonline profile

Why Your Emails Bounce (and How to Catch Bad Addresses Before You Hit Send)

#webdev #marketing #saas #productivity
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3 min read
Color Contrast Failures: The Number One Accessibility Issue and How to Fix It
toolkitonline profile

Color Contrast Failures: The Number One Accessibility Issue and How to Fix It

#a11y #css #webdev #beginners
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Comments
2 min read
GDPR Audit Automation: 5 Compliance Checks You Are Probably Missing
toolkitonline profile

GDPR Audit Automation: 5 Compliance Checks You Are Probably Missing

#webdev #security #privacy #tutorial
Image 1
Comments
2 min read
Screenshot APIs vs Headless Chrome: Benchmarks, Costs, and Decision Framework
toolkitonline profile

Screenshot APIs vs Headless Chrome: Benchmarks, Costs, and Decision Framework

#javascript #tutorial #webdev #node
Image 1
Comments
3 min read
5 Dev Tools I Built in 4 Months — What Worked, What Flopped
toolkitonline profile

5 Dev Tools I Built in 4 Months — What Worked, What Flopped

#indiehackers #saas #webdev #startup
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5 min read
How to Pass the EAA 2025 Accessibility Audit — A Step-by-Step WCAG Checklist
toolkitonline profile

How to Pass the EAA 2025 Accessibility Audit — A Step-by-Step WCAG Checklist

#a11y #webdev #wcag #eu
Comments
6 min read
Cryptographic audit trail for document APIs (Merkle tree, pure Node crypto, $0 cost)
toolkitonline profile

Cryptographic audit trail for document APIs (Merkle tree, pure Node crypto, $0 cost)

#node #cryptography #saas #api
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2 min read
Cookie banner auto-dismiss patterns for 12 CMPs (open source rules)
toolkitonline profile

Cookie banner auto-dismiss patterns for 12 CMPs (open source rules)

#webdev #javascript #api #opensource
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1 min read
AWS Textract vs ParseFlow: where the cost crossover actually happens
toolkitonline profile

AWS Textract vs ParseFlow: where the cost crossover actually happens

#aws #ocr #saas #webdev
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6 min read
How we recovered 47% of failed Stripe payments without hiring a CSM
toolkitonline profile

How we recovered 47% of failed Stripe payments without hiring a CSM

#stripe #saas #subscriptions #webdev
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6 min read
Screenshot APIs in 2026: What Actually Matters Beyond the Free Tier
toolkitonline profile

Screenshot APIs in 2026: What Actually Matters Beyond the Free Tier

#api #webdev #puppeteer #tools
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4 min read
PDF to Structured JSON Without ML Training: A 2026 Developer Guide
toolkitonline profile

PDF to Structured JSON Without ML Training: A 2026 Developer Guide

#api #ai #webdev #tutorial
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3 min read
Stripe Failed Payments: The Recovery Playbook That Saves 38% of Lost MRR
toolkitonline profile

Stripe Failed Payments: The Recovery Playbook That Saves 38% of Lost MRR

#stripe #saas #webdev #startup
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4 min read
The European Accessibility Act Is Live — Developer Guide
toolkitonline profile

The European Accessibility Act Is Live — Developer Guide

#a11y #webdev #css
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3 min read
The EU AI Act 2026 Cheat Sheet for Developers (No Lawyer Required)
toolkitonline profile

The EU AI Act 2026 Cheat Sheet for Developers (No Lawyer Required)

#ai #compliance #webdev #security
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3 min read
I shipped a "PDF to JSON" API and forgot to handle PDFs. Here's the 30-min fix.
toolkitonline profile

I shipped a "PDF to JSON" API and forgot to handle PDFs. Here's the 30-min fix.

#nextjs #serverless #typescript #webdev
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2 min read
Building Retention Playbooks: Proven Strategies to Reduce SaaS Churn
toolkitonline profile

Building Retention Playbooks: Proven Strategies to Reduce SaaS Churn

#business #saas #productivity #webdev
Comments 1
3 min read
The SaaS Revenue Leak: How Failed Payments Are Silently Killing Your MRR
toolkitonline profile

The SaaS Revenue Leak: How Failed Payments Are Silently Killing Your MRR

#business #saas #javascript #webdev
Comments 1
3 min read
Keyboard Navigation Testing: A Developer Complete Guide to WCAG Operability
toolkitonline profile

Keyboard Navigation Testing: A Developer Complete Guide to WCAG Operability

#a11y #webdev #javascript #tutorial
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3 min read
EU AI Act: What Every Developer Needs to Know Before Shipping
toolkitonline profile

EU AI Act: What Every Developer Needs to Know Before Shipping

#ai #webdev #eu #compliance
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3 min read
NIS2 Directive 2025: What Software Companies Need to Do Now
toolkitonline profile

NIS2 Directive 2025: What Software Companies Need to Do Now

#webdev #security #devops #tutorial
Comments
2 min read
Visual Regression Testing with Screenshot APIs: Catch UI Bugs Before Users Do
toolkitonline profile

Visual Regression Testing with Screenshot APIs: Catch UI Bugs Before Users Do

#testing #javascript #webdev #devops
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3 min read
Building an Automated Invoice Processing Pipeline with Node.js
toolkitonline profile

Building an Automated Invoice Processing Pipeline with Node.js

#javascript #tutorial #webdev #node
Image 1
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3 min read
Structured Data Extraction from PDFs: Regex vs Template Matching vs AI
toolkitonline profile

Structured Data Extraction from PDFs: Regex vs Template Matching vs AI

#ai #javascript #tutorial #productivity
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3 min read
EU AI Act Compliance for SMEs: What You Actually Need to Do Before August 2026
toolkitonline profile

EU AI Act Compliance for SMEs: What You Actually Need to Do Before August 2026

#ai #compliance #europe #startup
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4 min read
How to Build a Visual Monitoring System with a Screenshot API (Node.js + CaptureAPI)
toolkitonline profile

How to Build a Visual Monitoring System with a Screenshot API (Node.js + CaptureAPI)

#javascript #api #webdev #tutorial
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6 min read
Why I Built 200+ Digital Templates as a Solo Creator (And What Actually Sells)
toolkitonline profile

Why I Built 200+ Digital Templates as a Solo Creator (And What Actually Sells)

#productivity #sideprojects #beginners #webdev
Comments
1 min read
How Failed Payments Are Silently Killing Your SaaS Revenue (And How to Fix It)
toolkitonline profile

How Failed Payments Are Silently Killing Your SaaS Revenue (And How to Fix It)

#saas #payments #stripe #startup
Comments
3 min read
EAA Compliance Checklist: 10 Things Every EU Website Must Fix in 2026
toolkitonline profile

EAA Compliance Checklist: 10 Things Every EU Website Must Fix in 2026

#a11y #webdev #eaa #compliance
Comments
3 min read
How to Build a Website Screenshot API with Node.js and Puppeteer
toolkitonline profile

How to Build a Website Screenshot API with Node.js and Puppeteer

#node #api #tutorial #javascript
Image 1
Comments
2 min read
EU AI Act 2026: What Developers Need to Know
toolkitonline profile

EU AI Act 2026: What Developers Need to Know

#ai #europe #compliance #webdev
Comments
2 min read
15 Free Online Tools Every Developer Needs in 2026
toolkitonline profile

15 Free Online Tools Every Developer Needs in 2026

#webdev #tools #productivity #beginners
Comments
2 min read
I Built 5 SaaS Products in 7 Days Using AI
toolkitonline profile

I Built 5 SaaS Products in 7 Days Using AI

#ai #saas #nextjs #webdev
Image 1
Comments 1
2 min read
How to Extract Structured Data from PDFs Without ML Training
toolkitonline profile

How to Extract Structured Data from PDFs Without ML Training

#api #pdf #automation #devtools
Comments
1 min read
EU AI Act: 4 Months Left to Comply - What Developers Need to Know
toolkitonline profile

EU AI Act: 4 Months Left to Comply - What Developers Need to Know

#ai #regulation #webdev #opensource
Comments
1 min read
Why You Should Stop Self-Hosting Puppeteer for Screenshots
toolkitonline profile

Why You Should Stop Self-Hosting Puppeteer for Screenshots

#webdev #api #puppeteer #devops
Comments 1
1 min read
How Failed Payments Kill SaaS Revenue And How to Recover 30-50%
toolkitonline profile

How Failed Payments Kill SaaS Revenue And How to Recover 30-50%

#saas #stripe #payments #startup
Comments
1 min read
EAA Fines Are Live: Which EU Countries Are Enforcing Web Accessibility in 2026?
toolkitonline profile

EAA Fines Are Live: Which EU Countries Are Enforcing Web Accessibility in 2026?

#a11y #webdev #opensource #tutorial
Comments
1 min read
How I Built 5 SaaS Products in 2 Weeks as a Solo Developer
toolkitonline profile

How I Built 5 SaaS Products in 2 Weeks as a Solo Developer

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2 min read
I Built 143 Free Online Tools with Next.js — Here Is What I Learned
toolkitonline profile

I Built 143 Free Online Tools with Next.js — Here Is What I Learned

Image 1
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4 min read
PDF to JSON in One API Call: A Complete Guide to Document Extraction
toolkitonline profile

PDF to JSON in One API Call: A Complete Guide to Document Extraction

Comments
4 min read
How Failed Payments Silently Kill SaaS Revenue
toolkitonline profile

How Failed Payments Silently Kill SaaS Revenue

Comments
1 min read
EU AI Act 2025: What Every Developer Needs to Know
toolkitonline profile

EU AI Act 2025: What Every Developer Needs to Know

Comments
1 min read
Screenshot API vs Puppeteer: When to Use Each
toolkitonline profile

Screenshot API vs Puppeteer: When to Use Each

Comments
1 min read
European Accessibility Act: Check Your Website in 60 Seconds
toolkitonline profile

European Accessibility Act: Check Your Website in 60 Seconds

Comments
1 min read
The European Accessibility Act Is Now Live — Is Your Website Compliant?
toolkitonline profile

The European Accessibility Act Is Now Live — Is Your Website Compliant?

#a11y #webdev
Comments
3 min read
How I Built an Accessibility Scanner That Checks 201 WCAG Criteria
toolkitonline profile

How I Built an Accessibility Scanner That Checks 201 WCAG Criteria

#webdev #a11y #javascript #tutorial
Image 1
Comments
2 min read
5 Free APIs Every Developer Should Know in 2026
toolkitonline profile

5 Free APIs Every Developer Should Know in 2026

#webdev #api #tooling #productivity
Comments
3 min read
I Built 150+ Free Browser Tools as a Solo Dev
toolkitonline profile

I Built 150+ Free Browser Tools as a Solo Dev

#webdev #javascript #opensource #productivity
Comments
1 min read
How I Got 960 Pages Indexed with Next.js Segmented Sitemaps
toolkitonline profile

How I Got 960 Pages Indexed with Next.js Segmented Sitemaps

#nextjs #seo #webdev #typescript
Image 1
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2 min read
10 Printable ADHD Planning Tools That Actually Help You Stay Organized
toolkitonline profile

10 Printable ADHD Planning Tools That Actually Help You Stay Organized

#productivity #mentalhealth
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2 min read
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