Guides, tips, and tutorials to help you get the most out of free online tools.
Messenger caps videos at 25 MB, Gmail at 25 MB (really ~18 MB), Discord at 10 MB. Here is every app’s limit and how to compress a phone video to an exact size without wrecking it — free, on your phone.
Read moreWhat changed in the K to 12 grading system for SY 2026–2027 under DepEd Order 015 s. 2026 — component weights per subject, the summative-test exam formula, the adjusted transmutation table, new descriptors, awards — with worked examples and a free calculator.
Read moreThe GWA formula with worked examples, the 1.00–5.00 and 4.0 scales, percentage equivalents, and Latin-honours cut-offs for UP, UST, DLSU and Ateneo — plus a free calculator.
Read moreGet your GCash QR from the app, add a fixed amount or a price list of amounts, and print a Scan-to-Pay sign — free, in your browser. Plus what is actually inside a GCash / QR Ph code and why a QR made from a phone number alone won’t pay you.
Read moreLong bond paper is 8.5 × 13 in (21.59 × 33.02 cm) — not Legal, not A4. Exact sizes vs Short and A4, how to set Long in Word, Google Docs, Excel and Canva, and how to print an A4 PDF on Long without clipping.
Read moreThe exact 2x2 picture size in pixels and cm, the 1x1 and passport-size equivalents, PRC / CSC / NBI requirements, and a step-by-step way to make one from a phone photo — no app, no Word.
Read moreStep-by-step guide to making a tarpapel from any photo or design — choose paper, sheets or exact size, print at 100%, cut, overlap and tape. Free online maker, no Word or Excel needed.
Read moreExact sheet counts for common tarpapel sizes on A4, Long and Short bond paper, plus how big a 3×4-sheet tarpapel actually is and how to pick the right size for your photo.
Read moreCombine JPG, PNG, and WebP images into a single PDF document — in order, with no watermarks or sign-up. Everything runs privately in your browser.
Read morePull the audio out of any video as an MP3, WAV, or M4A. Learn which bitrate to choose and how to extract clean audio without watermarks or sign-up.
Read moreResize and crop photos to the exact dimensions you need — for Instagram, YouTube thumbnails, profile pictures, and more — without stretching or blur.
Read morePull specific pages or ranges out of a PDF into a new file — privately, in your browser, with no watermarks or sign-up. A step-by-step guide.
Read moreCreate accurate SRT subtitles from any video using browser-based AI speech recognition. Free, private, and no sign-up — a step-by-step guide.
Read moreLearn the difference between lossy and lossless compression, and how to reduce image file sizes for faster websites and smaller storage footprint.
Read moreWeak passwords are the number-one cause of data breaches. Learn what makes a password truly strong and how to generate one instantly.
Read moreCombine multiple PDF documents into one file without watermarks, sign-ups, or file size limits. A step-by-step guide using a free online tool.
Read moreUnix timestamps are everywhere in software. Learn what they are, why developers use them, and how to convert them to human-readable dates.
Read moreA practical comparison of the three most popular image formats. Learn when to use each one and how to convert between them.
Read moreA practical regex reference — the building blocks, the patterns you actually use (email, URL, phone, dates), common mistakes, and how to test them live.
Read moreTurn a wall of minified JSON into readable, valid data. Learn formatting vs. minifying, the most common JSON errors, and how to fix them in seconds.
Read moreTweet, SMS, meta description, ad copy, essay — every format has a limit. A practical guide to the counts that matter and how to hit them every time.
Read moreStandard passport and ID photo sizes by country, the rules nearly every authority shares, and how to make a compliant photo that passes first time.
Read moreWatermarking done right protects your images without ruining them. Learn text vs. logo marks, the best placement and opacity, and how to add one fast.
Read moreTurn a video clip into a clean, shareable GIF. Learn the three levers that control file size and how to make a loop that looks good everywhere.
Read moreLossy vs. lossless, which format to pick for editing, sharing, or archiving, and how to convert between MP3, WAV, M4A, and FLAC without losing quality.
Read moreWhat QR codes can hold, static vs. dynamic codes, and how to create one that scans reliably every time — with the contrast, size, and quiet-zone rules.
Read moreEvery favicon size you actually need in 2026 — 16, 32, 48, 180, 192 and 512 px — with a copy-paste <head> snippet, manifest, ICO vs PNG vs SVG, and a free generator.
Read moreJSON is hierarchical, CSV is flat — learn how to convert cleanly between them, how to handle nested data, and which format to use when.
Read moreHashing explained in plain English: why it is not encryption, why MD5 is broken, when to use SHA-256, and what hashes are actually for.
Read moreWhat Base64 does, why it exists, the critical fact that it is not encryption, and how to encode or decode it. Plus the 33% file-size trade-off.
Read moreA practical Markdown reference — headings, emphasis, lists, links, code, quotes, and tables — with the syntax that covers almost everything you write.
Read moreA text diff shows exactly what was added, removed, or changed between two versions. Learn line vs. word diffs and how to review edits in seconds.
Read moreWhat #FF5733, rgb(), and hsl() actually mean, which format to use when, and how to convert between them — plus tips on contrast and building palettes.
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