DailyBox blog

Practical guides for the jobs people actually search for. Each article explains the idea and links to the free tool that does the work.

• GuideHow to merge PDF files online for freeMerge several PDFs into one in your browser: add files, check the order, download. Tips for file order, size and what to do when the result is too big.
• GuideHow to compress images without losing qualityWhat lossless and lossy compression really mean, why resizing comes first, and how to shrink images for websites with a free browser tool.
• GuideHow to remove an image background online for freeCut out a subject and keep it transparent or add a new background. Choose the right engine, avoid rough edges and save as PNG.
• GuideHow to resize images for Instagram and social mediaCommon Instagram image sizes, how to resize or crop to them with a free browser tool, and why you should confirm sizes in the app.
• GuideHow to create a QR code for your businessMake a free QR code for a menu, website, Wi-Fi, WhatsApp or business card, and print it so it scans reliably.
• GuideWhat is a QR code and how does it work?A plain-language explanation of QR codes: what they store, how phones read them, static versus dynamic codes and how to scan safely.
• GuideWhat is a good internet speed? Ping, latency, jitter and download explainedHow to read internet speed test results: what download, upload, ping, latency and jitter mean, and what numbers different activities need.
• GuideHow to calculate a loan payment: formula, worked example and the effect of extra paymentsThe fixed-rate loan payment formula, a worked example with real numbers, and how an extra monthly payment shortens the loan and cuts interest.
• GuideWhat is Markdown? A beginner's guide (and how to convert it to PDF, HTML or Word)Learn what Markdown is, the basic syntax for headings, lists, links and tables, and how to turn a Markdown file into PDF, HTML or Word.
• GuideHow to reduce image size to 100 KB, 500 KB or 1 MBA practical way to get a photo under 100 KB, 500 KB or 1 MB: resize the dimensions, lower the quality and check the size after each try.
• GuideHow to Extract a Color Palette from an ImageLearn how to extract a color palette from any image: choose the number of colors, avoid muddy results, lock favorites and export HEX, CSS or JSON.
• GuideHow to Pick HEX Colors from Any ImagePick a HEX, RGB or HSL color from any image in your browser. Learn why the same pixel can show different codes and how to copy exact values.
• GuideHow to Create a Professional Brand Color PaletteA practical method for building a brand color palette: start from an image, pick roles, test contrast, and export CSS variables your team can reuse.
• GuideHow to Extract Frames from a Video OnlineExtract exact frames from an MP4 or WebM in your browser: pick a timestamp, step by 0.1 s, save JPG, PNG or WebP, or download many frames as a ZIP.
• GuideVideo to Image Sequence: How to Extract Many FramesNeed many frames from a video? See what a browser can extract (up to 100 per run), how to choose an interval, and when FFmpeg is the better tool.
• GuideHow to Create a Video Contact SheetBuild a video contact sheet in your browser: choose frames, columns, spacing, timestamps and background, preview it, then export PNG, JPG or WebP.