SolveBar
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SolveBar is a free collection of 85+ browser-based tools for developers, crypto users, and everyday tasks โ including JSON/XML formatters, hash generators, regex testers, crypto DCA/P&L/staking calculators, PDF editors (merge, split, compress, watermark), image tools (compress, resize, convert formats), and finance calculators (loan, mortgage, ROI, inflation). Every tool runs entirely client-side: files and data are processed locally in your browser and never uploaded to a server, so there's no account to create, no upload limits, and no risk of sensitive data (source code, financial records, crypto wallet details) touching third-party infrastructure. SolveBar is built and maintained by a single developer, Shakeel Ahmed, as a privacy-first alternative to the cloud-upload tool sites that dominate this space.
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SolveBar's answer
Every one of SolveBar's 85+ tools runs entirely client-side โ files, text, and numbers are processed locally in your browser and never uploaded to a server. That's true for everything from PDF/image editing to crypto calculators, not just a few "privacy mode" tools.
SolveBar's answer
Most free tool sites (PDF converters, image compressors, crypto calculators) require an upload to their servers or an account to unlock features. SolveBar needs neither โ no signup, no file leaves your device, and it covers developer, crypto, PDF, image, finance, and productivity tools in one place instead of bookmarking a dozen separate single-purpose sites.
SolveBar's answer
Developers and crypto/Web3 users who need quick utilities (JSON formatting, hash generation, DCA/P&L calculators, wallet checks) without trusting sensitive data to a third-party server, plus everyday users doing common PDF, image, or finance tasks who want a fast, no-account tool.
SolveBar's answer
Built by a single developer, Shakeel Ahmed, out of frustration with having to upload sensitive files (code, financial data, crypto trade history) to random cloud tools just to run a simple conversion or calculation. SolveBar started as a handful of privacy-first utilities and grew into a full suite spanning developer, crypto, PDF, image, and productivity tools โ every one built on the same rule: nothing ever leaves the browser.
SolveBar's answer
Next.js (React) and TypeScript, deployed on Vercel, with all file/data processing done client-side via browser-native Web APIs (Canvas, File API, local storage) rather than a backend.
i need so many qr codes, just found this side, it gave me 200+ qr codes in 1 shot in a zip file, it is awsome
TinyWow is a surprisingly useful collection of free online tools for PDFs, file conversions, images, videos, and text. The interface is simple, conversions are fast, and itโs perfect for quick tasks without installing software. Itโs become one of my go-to tools whenever I need to edit or convert files on the fly.
10015.io - 10015.io is an all-in-one toolbox offering many tools from various categories.
iLovePDF - Premium online PDF tool set
IT Tools - IT Tools is a free and open-source collection of handy online tools for developers & people working in IT.
Smallpdf - PDF document management and conversion suite
CoinStats - CoinStats is a cryptocurrency research and portfolio tracker, that allows to access market data on over 3000 cryptocurrencies, track bitcoin and altcoin investments.
CloudConvert - convert anything to anything - more than 200 different audio, video, document, ebook, archive, image, spreadsheet and presentation formats supported.
