A practical directory of free browser-based tools for images, PDFs, text, SEO, finance, developers, and everyday work.
Draft clear formal complaint letters for products, services, billing issues, delays, refunds, and customer support problems.
Calculate how long to reach your savings goal. Set a target, monthly contribution, and interest rate — see exactly when you'll hit your goal.
Estimate software development time using industry-standard formulas. Break down features, account for complexity, testing, and team velocity. Essential for PMs, freelancers, and engineering leads.
Estimate how much to charge for a software project. Feature breakdown, team rates, timeline, scope buffer, and professional proposal summary. Essential for freelancers, agencies, and dev shops.
Compare grocery prices by unit, discounts, tax, and package sizes to find the best deal before buying.
Encode URLs for safe transmission, decode them back — with character breakdown.
Calculate customer churn, revenue churn, retained customers, and retention rate for subscription businesses.
Turn a rough goal into a specific, measurable, achievable, relevant, and time-bound action plan with milestones.
Convert colors between HEX, RGB, HSL, HSV, and CMYK — with live preview.
Calculate missing width, height, simplified ratios, CSS aspect-ratio values, and responsive embed sizes.
Calculate NPS from promoter, passive, and detractor counts with category percentages and interpretation.
Organize by subject · Search · Edit · Color-coded cards
Generate strong, secure passwords with custom rules — completely client-side.
Create custom placeholder images with size, colors, label text, and instant PNG download.
Tell us what you want to build and we will review the request, understand the type of software, and contact you with the next step.