ThreadMine.dev
fastThread
PDFWix
iLovePDF
Smallpdf
Adobe Acrobat DC
PDF24
Sejda
PDF24 PDF Creator
Geekersoft PDF Editor
ThreadMine is a Java thread dump analyzer with AI โ detects deadlocks, CPU spikes, pool exhaustion and virtual thread pinning. Free online, no signup.
PDFWix is a free, browser-based PDF toolkit built for people who are tired of "free" PDF tools that come with strings attached. No signup walls. No watermarks on output. No daily file limits. No 60-minute waiting timers between operations. No premium upsells. Just 18 PDF tools that work, in any browser, on any device.
WHAT YOU CAN DO WITH PDFWIX
HOW PDFWIX IS DIFFERENT
Most "free" PDF tools (iLovePDF, SmallPDF, PDF24, Adobe Online) are actually freemium products. Their free tiers are designed to push you toward paid subscriptions through caps, signup walls, watermarks, or aggressive upsells. PDFWix is built differently:
WHO IT'S FOR
Anyone who works with PDFs and is tired of friction. Accountants merging invoices for expense reports. Students combining research papers. Lawyers organizing case files. Recruiters consolidating candidate documents. Real estate agents preparing closing folders. Or anyone who just needs to merge two PDFs without creating an account first.
If you've ever closed a PDF tool tab in frustration because of a signup wall or daily limit, PDFWix is built for you.
๐ Try it free โ https://www.pdfwix.com
ThreadMine.dev PDFWixPDFWix's answer:
PDFWix is genuinely free with no paid tier on core tools โ no signup walls, no watermarks on output, no daily file limits, and no upsells. Most "free" PDF sites (iLovePDF, SmallPDF, PDF24) are freemium products with friction designed to push you toward paid plans. PDFWix has no upgrade path to push you to. It's just 18 PDF tools that work in any browser.
PDFWix's answer:
Choose PDFWix if you've ever closed a PDF tool in frustration because of a signup wall, daily cap, or watermark. SmallPDF caps free users at 2 files daily. iLovePDF requires signup for many operations. PDFWix has no caps, no signups, no watermarks, and supports files up to 100MB. Choose iLovePDF or SmallPDF if you need OCR, mobile apps, or 27-language support โ those are still better. PDFWix is the better fit for quick, friction-free tasks that don't need an account.
PDFWix's answer:
Anyone who works with PDFs occasionally and doesn't want to create an account every time. Specifically: accountants merging invoices, students combining research papers, recruiters consolidating candidate documents, lawyers organizing case files, real estate agents preparing closing folders, and freelancers handling client documents. Generally privacy-conscious users who don't want to upload sensitive files to a service that requires login or stores them indefinitely.
PDFWix's answer:
I needed to merge 3 invoices for an expense report. SmallPDF told me I'd hit my "free" daily limit at 2 files. iLovePDF wanted me to sign up to merge a third. PDF24 worked but the UX felt dated. The third time this happened in a month, I started looking at the niche seriously. The pattern was clear โ every "free" PDF site has friction designed to push you toward paid. So I built PDFWix as the indie alternative: no investors, no paid tier on core tools, no growth-hacking gimmicks. Just 18 PDF tools that stay free.
PDFWix's answer:
React, Vite, TypeScript, Tailwind CSS for the frontend. Cloudflare Workers + Prerender.io for SEO infrastructure (server-rendering for bots). Standard PDF processing libraries on the backend. Hosted on Cloudflare's edge network for global low-latency. SSL encryption on all uploads.
PDFWix's answer:
fastThread - Free online thread dump analyzer to troubleshoot Java, android applications. Kotlin, Clojure, Scala, Jruby, Jython, all JVM language thread dumps are supported. hs_err_pid, core dump files are analyzed.
iLovePDF - Premium online PDF tool set