The latest articles on DEV Community by Chat Comics (@chatcomics). https://dev.to/chatcomics https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3861348%2F59788402-3433-4928-85eb-693965aea946.png https://dev.to/chatcomics en Chat Comics Sat, 04 Apr 2026 19:58:42 +0000 https://dev.to/chatcomics/how-we-turn-whatsapp-chats-into-illustrated-comics-and-why-its-harder-than-it-sounds-bdh https://dev.to/chatcomics/how-we-turn-whatsapp-chats-into-illustrated-comics-and-why-its-harder-than-it-sounds-bdh <h1> How We Turn WhatsApp Chats Into Illustrated Comics (And Why It's Harder Than It Sounds) </h1> <p>When people hear "upload your WhatsApp chat, get a comic back", they usually imagine something like a simple screenshot with speech bubbles slapped on top. The reality of what Chat Comics actually does is considerably weirder — and, we think, considerably more interesting.</p> <p>This is a behind-the-scenes look at how <a href="https://chatcomics.app" rel="noopener noreferrer">Chat Comics</a> works: the AI pipeline, the design decisions, the rabbit holes we fell down, and the bits that still surprise us.</p> <h2> The Problem: A Chat Export Is Just a Text File </h2> <p>A WhatsApp chat export looks like this:<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code>01/03/2025, 14:22 - Jamie: did anyone watch that documentary last night 01/03/2025, 14:23 - Sarah: which one 01/03/2025, 14:23 - Jamie: the one about the guy who thought he was a dog 01/03/2025, 14:24 - Marcus: 💀💀💀 01/03/2025, 14:25 - Sarah: JAMIE WHY ARE YOU WATCHING THAT 01/03/2025, 14:31 - Jamie: it was on recommended ok </code></pre> </div> <p>That's it. Timestamps, names, raw text, the occasional emoji. No tone. No stage directions. No sense of who these people are or what their dynamic is.</p> <p>Turning <em>that</em> into a visually compelling, narratively coherent illustrated comic requires solving a surprisingly deep stack of problems.</p> <h2> Step 1: Parsing and Cleaning </h2> <p>WhatsApp export formats vary by platform (iOS vs Android), locale, and version. Date formats differ. System messages ("Jamie added Sarah", "Messages are end-to-end encrypted") need stripping. Deleted messages, media attachments, and multi-line messages all need handling gracefully.</p> <p>Before anything creative happens, the raw export goes through a normalisation pass that produces a clean, structured conversation object: participants, timestamps, message text, and metadata.</p> <p>Privacy isn't an afterthought — it's baked into the pipeline from step one.</p> <h2> Step 2: Narrative Extraction with Claude </h2> <p>Here's where things get interesting. We don't just want to illustrate the chat verbatim — we want to turn it into a <em>story</em>.</p> <p>We pass the cleaned conversation to Claude with a detailed prompt that asks it to:</p> <ul> <li>Identify the <strong>central tension or theme</strong> of the conversation</li> <li>Establish <strong>character archetypes</strong> for each participant (the chaos gremlin, the voice of reason, the silent observer, etc.)</li> <li>Extract <strong>key dramatic beats</strong> — the moment things escalated, the punchline, the resolution</li> <li>Write <strong>comic panel descriptions</strong> with narration, dialogue, and scene context</li> <li>Assign <strong>emotional states</strong> to characters at each beat</li> </ul> <p>The mood the user selects (funny, dramatic, roast, horror, romance, detective — there are 12 total) heavily influences this extraction. The same chat about who forgot to buy milk reads very differently as a wholesome slice-of-life versus a psychological horror story.</p> <p>This is the most creative and unpredictable part of the pipeline. Claude regularly finds angles in chats that are genuinely funnier or more poignant than we'd have anticipated. It's also occasionally completely wrong about who the villain is, which is its own kind of entertainment.</p> <h2> Step 3: Character Design </h2> <p>Every participant gets a consistent visual identity — an avatar that appears across all panels with appropriate facial expressions.</p> <p>Character design is generated from the personality signals Claude extracted in step 2, combined with any name-based cues. The goal is caricature, not portraiture: exaggerated features, bold design, immediately readable personality.</p> <p>Expression variants (happy, shocked, suspicious, smug, horrified, etc.) are generated for each character upfront, so we can pick the right emotional beat for each panel without inconsistency. Keeping a character visually coherent across multiple generated images is one of the harder unsolved problems in this space — our current approach trades some flexibility for consistency.</p> <h2> Step 4: Scene and Panel Illustration </h2> <p>Each narrative beat gets a background scene. A kitchen argument. A 3am spiral. A group call where nobody has turned their camera on. A passive-aggressive reaction to being left on read.</p> <p>Scenes are generated to match the mood and context of the panel, with characters composited in. The visual style stays consistent throughout a comic — we set a style token at the start of generation and it propagates through every image in that run.</p> <p>Panel layout, speech bubbles, narration boxes, and typography are assembled in the final composition step. This is more layout engineering than AI — making sure text fits, panels breathe, and the reading order feels natural.</p> <h2> The 12 Moods Problem </h2> <p>Supporting 12 wildly different genre moods with a single pipeline is genuinely strange to build. The same conversation needs to produce:</p> <ul> <li> <strong>Funny</strong>: exaggerated reactions, comedic timing, rimshot energy</li> <li> <strong>Dark</strong>: same events, but now there's dread. The ellipsis before a reply is terrifying.</li> <li> <strong>Detective</strong>: dry narration, establishing shots, mystery energy</li> <li> <strong>Love</strong>: soft lighting, meaningful glances, everything is a meet-cute</li> <li> <strong>Epic</strong>: the group chat gets the blockbuster treatment</li> </ul> <p>Each mood has its own prompt modifiers, visual style parameters, and narrative framing instructions. Getting them to feel genuinely distinct — rather than just "same comic with different filter" — took a lot of iteration.</p> <p>Dark mode remains our personal favourite. There is something deeply unsettling about a mundane chat about weekend plans rendered with an unsettling edge.</p> <h2> Privacy Architecture </h2> <p>This is worth being explicit about, because it shaped a lot of decisions.</p> <p>Chat exports contain real conversations between real people — most of whom never opted into having their messages processed by an AI. That's a serious responsibility.</p> <p>Our approach:</p> <ul> <li> <strong>No persistent storage of chat content.</strong> Uploads are processed in memory and deleted immediately after the comic is generated.</li> <li> <strong>No training on user data.</strong> Chat content is never used to fine-tune or improve models.</li> <li> <strong>Minimal metadata retention.</strong> We keep enough to deliver the comic and handle support requests, nothing more.</li> <li>Sign in with Google to get started — your first comic is free.</li> </ul> <p>These constraints occasionally made engineering harder. They were always worth it.</p> <h2> What Still Surprises Us </h2> <p>After building this: AI is remarkably good at reading group dynamics. It picks up on who defers to whom, who escalates, who defuses. It notices callback humour across a long thread. It understands that the person who sends a single full stop is ominous.</p> <p>It's also confidently wrong in ways that are genuinely funny. It occasionally assigns villain status to someone who was clearly joking, or reads a chaotic voice-note thread as a deeply philosophical meditation on existence.</p> <p>Both outcomes make for good comics.</p> <h2> Try It </h2> <p>If you want to see what your group chat looks like as a comic, <a href="https://chatcomics.app" rel="noopener noreferrer">Chat Comics</a> is free for your first comic. No account needed. Your data's gone the moment your comic is generated.</p> <p>We'd love to hear what you think — and yes, horror mode is worth trying at least once.</p> ai webdev showdev comic Chat Comics Sat, 04 Apr 2026 19:43:20 +0000 https://dev.to/chatcomics/how-i-built-an-ai-that-turns-whatsapp-group-chats-into-comic-stories-4i3d https://dev.to/chatcomics/how-i-built-an-ai-that-turns-whatsapp-group-chats-into-comic-stories-4i3d <h1> How I Built an AI That Turns WhatsApp Group Chats Into Comic Stories </h1> <p>You know that group chat where your mate said something absolutely unhinged at 2am? What if you could turn it into an illustrated comic?</p> <p>That's exactly what <a href="https://chatcomics.app" rel="noopener noreferrer">Chat Comics</a> does. Upload a WhatsApp chat export, pick a mood, and AI generates a fully illustrated comic story — complete with character avatars, facial expressions, scene illustrations, and dramatic narration.</p> <h2> The Tech Stack </h2> <ul> <li> <strong>Frontend</strong>: React 19, TypeScript, Vite, Tailwind CSS</li> <li> <strong>Backend</strong>: Netlify Functions (serverless)</li> <li> <strong>Database</strong>: Turso (serverless SQLite)</li> <li> <strong>AI</strong>: Claude for story generation, Gemini for image generation</li> <li> <strong>Worker</strong>: Node.js on EC2 with PM2</li> </ul> <h2> How It Works </h2> <ol> <li> <strong>Upload</strong>: Export your WhatsApp chat as a .txt or .zip file</li> <li> <strong>Choose a Mood</strong>: Pick from 12 options — funny, dramatic, roast, wholesome, horror, romance, detective, action, sci-fi, documentary, motivational, or chaotic</li> <li> <strong>AI Magic</strong>: Claude analyses the chat, identifies key moments, and weaves them into a narrative story</li> <li> <strong>Character Art</strong>: Each person gets a unique avatar with 10 different facial expressions</li> <li> <strong>The Result</strong>: A multi-panel comic story with prose narration, direct quotes, and scene illustrations</li> </ol> <h2> Privacy First </h2> <p>The biggest concern with a product like this is privacy. People's chat messages are deeply personal. So we built privacy into the architecture:</p> <ul> <li>Chat text is encrypted in transit and at rest</li> <li>All data is automatically deleted after processing</li> <li>No messages are stored, logged, or used for training</li> <li>The tagline says it all: Your chat. Your comic. Data deleted.</li> </ul> <h2> 12 Moods, 12 Different Stories </h2> <p>The mood system is what makes Chat Comics unique. The same chat can produce wildly different stories:</p> <ul> <li> <strong>Funny</strong>: Amplifies the comedy, turns awkward moments into punchlines</li> <li> <strong>Dramatic</strong>: Soap opera energy, everything is life or death</li> <li> <strong>Roast</strong>: Brutal honesty, calls everyone out</li> <li> <strong>Wholesome</strong>: Finds the heartwarming moments</li> <li> <strong>Horror</strong>: Turns mundane messages into something sinister</li> </ul> <p>Each mood completely transforms the narrative voice, pacing, and which messages get highlighted.</p> <h2> Try It </h2> <p>First comic is free. No sign-up required to browse the demo stories.</p> <p>Check it out: <a href="https://chatcomics.app" rel="noopener noreferrer">chatcomics.app</a></p> <p>Would love to hear what you think — especially if you have a legendary group chat that needs the comic treatment.</p> webdev ai javascript showdev