https://www.mocknex.com/blog Practical guides for chat mockups, social media screenshots, story videos and YouTube thumbnails. en Sun, 04 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/fake-call-screens-for-skits-and-short-films https://www.mocknex.com/blog/fake-call-screens-for-skits-and-short-films Which call screen tells which story, the details that make an incoming, in-call, video or missed-call screen believable on camera, and how to build a call sequence. Phone UI Sun, 04 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-download-a-youtube-thumbnail https://www.mocknex.com/blog/how-to-download-a-youtube-thumbnail The five thumbnail sizes YouTube keeps for every video, how to download them, why the HD one is sometimes missing, and why some have black bars. YouTube Sun, 04 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-ab-test-youtube-thumbnails https://www.mocknex.com/blog/how-to-ab-test-youtube-thumbnails How YouTube’s Test & compare works: who can use it, testing up to three thumbnails or titles, reading the results, and designing variants worth testing. YouTube Sun, 04 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/youtube-titles-and-thumbnails-that-work-together https://www.mocknex.com/blog/youtube-titles-and-thumbnails-that-work-together Give your title and thumbnail different jobs: before-and-after examples, title length limits, thumbnail text ideas and ways to test both before and after publishing. YouTube Sat, 03 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-make-a-youtube-end-screen https://www.mocknex.com/blog/how-to-make-a-youtube-end-screen End screen rules (5–20 seconds, up to 4 elements), layouts that work, how to design the background, what to say in the last 20 seconds and why people don’t click. YouTube Sat, 03 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/youtube-banner-size-and-safe-area https://www.mocknex.com/blog/youtube-banner-size-and-safe-area YouTube banner dimensions, the 1235×338 safe area and exactly how TVs, desktops, tablets and phones crop it — with a layout that never gets cut off. YouTube Sat, 03 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/youtube-thumbnail-size-and-requirements https://www.mocknex.com/blog/youtube-thumbnail-size-and-requirements YouTube thumbnail size rules: 3840×2160 recommended, 2 MB from the app, 50 MB on desktop — plus where the timestamp covers your design and upload fixes. YouTube Sat, 03 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-put-a-screenshot-in-a-phone-mockup https://www.mocknex.com/blog/how-to-put-a-screenshot-in-a-phone-mockup Turn a chat or post into a polished phone mockup: when to use one, which size for each platform, picking backgrounds and phone colours, and keeping text readable. Phone UI Fri, 02 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-make-a-fake-tweet-screenshot https://www.mocknex.com/blog/how-to-make-a-fake-tweet-screenshot Build a believable X (Twitter) post: name, @handle, badge colours, timestamp format, realistic view and like counts, replies and dark mode. Social media Fri, 02 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-tell-if-a-text-message-screenshot-is-fake https://www.mocknex.com/blog/how-to-tell-if-a-text-message-screenshot-is-fake Status bar clocks, read receipts, fonts, emoji and pixel clues: how to check whether a chat screenshot is real — and why no visual check is proof. Chats Fri, 02 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/is-it-illegal-to-make-fake-text-messages https://www.mocknex.com/blog/is-it-illegal-to-make-fake-text-messages Making a fake text is legal in most places — using it to deceive, defame, harass or as evidence is not. Where the lines are, grey areas and safe-use rules. Chats Fri, 02 Oct 2026 00:00:00 GMT https://www.mocknex.com/blog/ai-chat-mockups-for-tutorials https://www.mocknex.com/blog/ai-chat-mockups-for-tutorials When a scripted AI chat mockup beats a real screenshot, how to format answers so they read well, and how to label mockups honestly. AI Mon, 28 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/comment-screenshots-for-videos https://www.mocknex.com/blog/comment-screenshots-for-videos How creators use comment mockups for reply videos and storytelling, how each platform shows creator replies, and where the ethical lines are. Social media Sun, 27 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/chat-app-screenshot-differences https://www.mocknex.com/blog/chat-app-screenshot-differences A side-by-side comparison of where each chat app puts timestamps, read receipts, names and bubble tails — so your mockup matches the app. Chats Sat, 26 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-create-phone-notification-mockups https://www.mocknex.com/blog/how-to-create-phone-notification-mockups Write notification copy that survives truncation, stack notifications to tell a story, and design lock screens for product decks and film. Phone UI Fri, 25 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-write-better-chat-story-videos https://www.mocknex.com/blog/how-to-write-better-chat-story-videos The writing side of text-story videos: opening hooks, one idea per message, typing-indicator beats, reveals and endings that earn a part two. Video Thu, 24 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/fake-social-media-posts-for-film-and-tv https://www.mocknex.com/blog/fake-social-media-posts-for-film-and-tv A practical guide for art departments and indie filmmakers: fictional handles, clearance, screen inserts vs. replacements, resolution and continuity. Social media Wed, 23 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-make-a-group-chat-screenshot https://www.mocknex.com/blog/how-to-make-a-group-chat-screenshot Writing a group chat is like writing an ensemble scene. How to give each person a voice, use colours and system messages, and keep it readable. Chats Tue, 22 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-create-instagram-dm-mockups https://www.mocknex.com/blog/how-to-create-instagram-dm-mockups What makes an Instagram-style DM recognisable, how to show “Seen”, verified badges and story replies, and how creators and brands use DM mockups. Social media Mon, 21 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/chat-screenshots-for-youtube-videos https://www.mocknex.com/blog/chat-screenshots-for-youtube-videos How to make chat screenshots readable at 1080p, how long to keep them on screen, 16:9 framing and using chats in thumbnails. Video Sun, 20 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-make-fake-text-message-videos-for-tiktok https://www.mocknex.com/blog/how-to-make-fake-text-message-videos-for-tiktok Script, build and export a chat-story video in your browser: typing animation, pacing presets, 9:16 framing, MP4 export, safe zones and editing tips. Video Sat, 19 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-create-iphone-text-message-mockups https://www.mocknex.com/blog/how-to-create-iphone-text-message-mockups Blue vs green bubbles, when “Delivered” and “Read” appear, where timestamps go, and how to export at true iPhone resolution. Chats Fri, 18 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-create-a-fake-whatsapp-chat-screenshot https://www.mocknex.com/blog/how-to-create-a-fake-whatsapp-chat-screenshot A practical walkthrough for WhatsApp-style chat mockups: ticks, bubble tails, date chips, voice notes, group names and dark mode — with examples. Chats Thu, 17 Sep 2026 00:00:00 GMT https://www.mocknex.com/blog/how-to-make-a-realistic-fake-chat-screenshot https://www.mocknex.com/blog/how-to-make-a-realistic-fake-chat-screenshot The small details that make a chat mockup believable — timing, receipts, typos, status bars — and a step-by-step workflow to build one in minutes. Chats Wed, 16 Sep 2026 00:00:00 GMT