SynthQuery’s Resize for Viber is a free, browser-based image resizer for people who use Viber daily—personal profiles, community admins, sticker artists, and business accounts that send rich visuals through Viber’s ecosystem. You bring PNG, JPEG, WebP, or a flattened GIF frame; the tool reads each file’s true width and height, then maps your work onto Viber-oriented pixel targets so you are never guessing whether “profile size” means a square master, a circle mask, or something else entirely.
Viber spans avatars, group photos, channel covers, stickers, shared chat images, business-style message layouts, and bot reply keyboards with tiny button artwork. Those surfaces do not share one universal canvas, which is why this page lists explicit presets: 720×720 for profile and group photos, 490×490 for classic sticker squares plus a proportional “custom max” mode that caps the longest edge at 490 pixels, 720×360 for two-to-one channel covers, 600×338 for a common business-message aspect, proportional scaling with a 1600-pixel longest-edge cap for general sharing, and square bot-keyboard targets from 48 through 240 pixels for the sizes teams most often prototype before handing assets to developers.
Everything decodes, draws, and encodes with standard Canvas APIs in your own tab. That matters for schools, agencies, and regulated teams who prefer not to route unreleased creative through third-party upload converters. When your workflow shifts from pixels to policy, authenticity, or long-form writing quality, SynthQuery’s broader catalog remains nearby: the Free tools hub lists lightweight utilities, while https://synthquery.com/tools surfaces AI detection, humanization, readability scoring, plagiarism checks, and dozens of other product routes. This resizer never replaces Viber’s own clients—those apps may still recompress—but it gives you a deliberate first hop so surprises are smaller and your art direction survives the initial encode.
What this tool does
The interface follows a straight pipeline: ingest images, pick a Viber-oriented preset, choose how geometry maps to the frame, preview, then export one file or a batch ZIP. Ingestion supports drag and drop, a normal file picker, and paste from the clipboard—ideal when you copy a still from Figma, a screenshot utility, or a photo editor. Each queued row shows filename, intrinsic pixel dimensions, and a reminder that animated GIFs flatten to their first frame, which matches expectations for static sticker prep rather than motion deliverables.
Preset cards spell out targets so you never wonder whether “sticker” implies a hard square or a longest-edge budget. Profile and group presets use 720×720 squares before Viber often masks circular avatars in the UI; a circular preview approximates how square pixels survive radial crops. Sticker presets include a strict 490×490 canvas and a proportional variant that never exceeds 490 pixels on the longest side—useful when your art is rectangular but must still respect sticker limits. Channel cover locks 720×360 with a gentle warning to keep critical text in a safe center band because phone chrome varies. Business message image uses 600×338 as a widely cited sixteen-by-nine-ish authoring target for many rich layouts; always confirm against your specific Viber Business template. Shared image mode scales proportionally with a 1600-pixel longest-edge cap. Bot keyboard presets enumerate 48, 72, 96, 120, and 240 pixel squares so designers can sanity-check legibility before engineers wire JSON or CMS entries.
Crop modes translate to familiar language: Fit keeps the entire image and may letterbox; Fill scales until the frame is covered and trims excess, with a clickable source preview plus sliders (or keyboard-focusable controls) to bias the focal point; Stretch maps axes independently when you accept distortion. Proportional presets skip fit/fill because mathematics is purely aspect-preserving. For sticker Fit mode you can enable transparent letterboxing, which exports PNG with alpha in padded regions so characters can float cleanly—when that option is active, format controls lock to PNG behavior so you are not accidentally flattening to opaque JPEG.
Preview tabs let you compare source and output side by side or isolate the final frame. A sticker pack preview grid repeats your current export in eight tiles as an illustrative strip—actual Viber sticker packaging and store flows still happen inside Viber’s tools, but the grid helps teams visualize rhythm and padding. Batch mode queues many files and downloads a ZIP with predictable filenames. Loading indicators appear while previews regenerate so large screenshots never feel stuck.
Technical details
Viber’s clients, like most messaging platforms, optimize bandwidth and storage by re-encoding uploads. Even crisp masters may pass through scaling and lossy compression. Authoring at documented targets—720×720 avatars, 490-pixel sticker grids, 720×360 covers, 600×338 business frames—reduces the severity of downstream surprises. Shared image mode’s 1600-pixel longest-edge cap is a practical authoring ceiling before additional client logic; it is not a guarantee of lossless delivery end to end.
Sticker workflows on real devices may impose additional rules around file weight, transparency, and packaging; this page prepares static rasters with explicit geometry rather than replacing Viber’s sticker submission tools. Canvas exports generally strip most EXIF metadata—retain originals in a digital asset manager when licensing depends on embedded provenance. Color management follows typical browser behavior: wide-gamut masters may shift subtly when flattened to eight-bit RGB; verify critical brand colors on calibrated displays. Very large sources can stress tab memory; consider pre-scaling in an editor when importing RAW stills. GIF sources contribute first frame only; animated sticker pipelines belong elsewhere.
Use cases
Sticker creators preparing static expressions benefit from exact 490×490 masters, transparent gutters when mascots need breathing room, and Fill with focal control when artwork should kiss every edge. Community administrators refreshing a group avatar can reuse the same 720×720 pipeline as personal profiles while keeping logos centered for circular masks. Channel owners exporting cover art can enforce the 720×360 aspect before testing safe zones on real devices.
Business teams sending promotional cards through Viber Business flows can normalize hero images to 600×338 before copywriters add text overlays, reducing last-minute skew when templates expect a sixteen-by-nine-ish frame. Bot developers iterating reply keyboards can drop icons into 48-through-240 presets to see which silhouette survives at thumb size before committing to a full set. Photographers sharing location shots can run Shared image mode so the longest edge caps at 1600 pixels—often enough detail for mobile viewing without inviting harsh client-side downscaling from multi-megapixel originals.
Agencies running multi-app campaigns can batch resize a week of assets with one crop philosophy, ZIP the outputs, and hand them to localization or compliance reviewers. Journalists handling sensitive captures appreciate local processing: this resize path does not upload bytes to SynthQuery for encoding. Educators teaching aspect ratio can pair the UI with SynthQuery’s AI Detector or Humanizer when student assignments mix generative copy with screenshots. Whenever you need arbitrary dimensions outside these presets, branch to the general Image Resizer and return here when the destination is specifically Viber.
How SynthQuery compares
Viber’s mobile and desktop apps excel at in-context cropping when you pick a photo from the camera roll, but they are not always where teams want to finalize geometry—especially when art originates in Photoshop, Illustrator, Figma, or Affinity, when batch consistency matters, or when policies discourage cloud upload converters. SynthQuery’s page focuses on deterministic pixels, transparent sticker letterboxing, focal-point-driven Fill crops, and ZIP batching on desktop-class hardware without requiring a Viber login just to resize a file.
The table below contrasts this utility with typical in-app flows so you can choose the right phase: creative normalization in the browser versus final publishing inside Viber.
Aspect
SynthQuery
Typical alternatives
Privacy & data path
Decode, draw, and encode in your browser tab; image bytes for this resize flow are not uploaded to SynthQuery servers.
In-app uploads send imagery into Viber’s ecosystem; review Viber’s terms and your org’s policies when handling sensitive assets.
Batch & ZIP
Queue many files and download a single ZIP with predictable filenames—useful for agencies prepping weekly drops or sticker slices.
Mobile pickers usually process one asset at a time; desktop clients vary and rarely match DAM-style batch naming.
Explicit presets
Cards list 720×720, 490×490, 720×360, 600×338, ≤1600 longest edge, and bot keyboard squares with on-canvas labels.
Automatic UI crops can obscure exact output pixels until after upload, which complicates cross-platform reuse.
Ecosystem
Neighboring routes include Resize for WhatsApp, Telegram, Snapchat, and the general Image Resizer, plus AI tools on https://synthquery.com/tools.
Viber-native tooling optimizes for in-app publishing rather than cross-platform DAM or detector workflows.
How to use this tool effectively
Start from the highest-quality still you have rights to use—prefer an uncompressed or lightly compressed master from camera or design export rather than a re-downloaded social copy, especially when small text must stay legible. Open this page and add images through drag and drop, Browse, or paste from the clipboard after copying a frame from your editing software. Watch the queue: each row lists intrinsic width and height so you can catch accidental low-resolution exports before baking pixels.
Click a row to make it the active preview; remove items or clear the queue when switching projects. Choose the preset that matches your destination: Profile photo or Group chat photo for 720×720 square masters with optional circular preview; Sticker or Sticker (custom max) for 490-pixel workflows; Channel cover for 720×360; Business message image for 600×338; Shared image for proportional scaling capped at 1600 pixels on the longest side; Bot keyboard sizes for tiny button artwork.
Set crop behavior for exact-canvas presets. Use Fit when nothing may be cropped—pick a solid letterbox color or enable transparent letterbox on sticker presets when characters should float on alpha. Use Fill when the frame should saturate edge to edge; click the source preview or adjust focal sliders until the subject sits where you want under Viber’s circular or rectangular crops. Use Stretch only when you consciously accept non-uniform scaling. Proportional presets ignore those modes because scaling preserves aspect ratio automatically.
Choose whether exports should mirror the incoming raster family or force JPG versus PNG, then tune quality for JPG when cellular upload time matters. Transparent sticker letterboxing forces PNG while enabled. Use Preview tabs to compare side by side or view output only; review the sticker pack grid when preparing multiple expressions with consistent padding. Download one file for a single upload, or Download as ZIP when a batch is ready. Visit /free-tools to discover neighboring utilities, or https://synthquery.com/tools for the full product grid including AI Detector and Humanizer when captions and policies need review alongside visuals.
After download, spot-check one file in your OS preview and one inside Viber’s composer when possible; automated tools cannot replace every client-specific sharpening choice.
Limitations and best practices
Animated GIFs contribute only their first frame here; motion and official sticker packaging belong in Viber’s own sticker or developer workflows. Upscaled small sources cannot recover lost detail; start from sharp masters. Circular previews approximate profile masking but are not pixel-perfect emulators of every theme. Accessibility for imagery itself means high contrast and large shapes on thumbnails; pair visuals with descriptive captions in messages. Legal reviewers should keep model releases and trademark usage separate from this utility: the resizer changes geometry, not rights. If your organization requires CMYK print masters, archive those independently—social exports are RGB-first.
Explore the full product surface at https://synthquery.com/tools: AI detection, humanization, readability, plagiarism checks, schema generators, and more.
Soften stiff phrasing in business broadcasts or bot replies while keeping factual claims accurate.
Frequently asked questions
Many static sticker workflows target a 490×490 pixel square canvas so art stays sharp on high-density phones while remaining compatible with sticker grids inside chat. This tool includes that exact square preset plus a proportional “custom max” mode that scales your image so the longest side never exceeds 490 pixels—helpful when your source is wider or taller than square but must still respect the same edge budget. Use Fit with transparent PNG letterboxing when characters need padding, or Fill with a focal point when the illustration should reach the edges. Official sticker submission and store rules can evolve; always verify the latest Viber documentation for animated or packaged sets beyond single static files.
A practical square master is 720×720 pixels before Viber displays it inside circular masks in many views. Exporting far smaller can look soft on modern devices; exporting vastly larger often wastes bandwidth because clients downscale anyway. Use Fill mode with a focal point when your source is wide so faces stay centered, or Fit when the entire emblem must remain visible with letterboxing. The circular preview on this page approximates how square pixels survive radial cropping—it is a guide, not a pixel-perfect emulator of every OS theme. Group chat photos use the same 720×720 grid in this tool so administrators can reuse one crop philosophy across personal and community avatars.
Start from a sharp illustration or a tightly masked photo extraction, then normalize dimensions with the 490×490 preset for classic square stickers or the proportional 490-pixel longest-edge preset for rectangular art. Export PNG when you need transparency around the subject, or JPG when the artwork is fully opaque and smaller file size matters more than alpha. Use the sticker pack preview grid to check visual rhythm before you hand files to developers or packagers. Creating or publishing sticker products inside Viber may require additional steps through Viber’s own flows; this page focuses on the raster geometry layer. Batch ZIP export helps when many expressions share one padding strategy.
This tool uses a 720×360 pixel frame—a two-to-one aspect ratio suited to horizontal channel cover strips. Keep logos, titles, and faces in a conservative center band because mobile chrome and safe zones can crop differently across devices. Use Fill with a focal point on wide photography so the horizon or product stays where subscribers expect, or Fit when the entire poster must remain visible with letterboxing. After export, open the image on a phone inside Viber when possible because subjective readability beats theoretical pixels alone.
A widely useful authoring target is 600×338 pixels, roughly a sixteen-by-nine-style frame that matches many rich business-message layouts. It is labeled here as a recommendation because specific Viber Business templates can vary; confirm against your live template before locking brand guidelines. Use Stretch sparingly; prefer Fit or Fill from a high-resolution raster or vector export. Pair imagery with concise copy and test on both iOS and Android when campaigns are revenue-critical.
Messaging applications optimize bandwidth, storage, and rendering latency by re-encoding large photos. Even crisp masters often pass through scaling and lossy compression before recipients see them. Authoring with reasonable dimensions—such as capping the longest edge around 1600 pixels for general shares or using 720×720 for avatars—reduces harsh artifacts compared with uploading eight-megapixel screenshots straight from a camera roll. This page’s Shared image preset scales proportionally to that 1600-pixel cap so you supply a deliberate first hop before Viber applies its own logic. Compression is expected client behavior rather than a failure of local preprocessing.
There is no single universal pixel size for every keyboard skin or client theme, which is why this tool lists common squares—48, 72, 96, 120, and 240 pixels—for quick iteration. Smaller targets demand bold silhouettes and minimal text; larger targets allow more detail but may still downscale in production. Export PNG with transparency when icons float on varying backgrounds, or JPG when photos are opaque. After export, test inside your actual bot UI because padding, corner radii, and dark mode all change perceived contrast.
Yes. Add up to the queue limit, verify each file’s intrinsic dimensions in the list, keep one preset selected, and click Download as ZIP. The archive uses predictable filenames so producers can map outputs back to asset slugs. If different destinations need different presets, run separate batches or switch presets between exports to avoid mixing mismatched sizes in one archive. GIF sources flatten to first frame only; plan separate motion tooling for animated deliverables.
No. Decoding, rasterizing, and encoding happen entirely in your browser using Canvas APIs for this workflow. SynthQuery does not receive your image bytes for the resize operation itself, which makes the page friendlier for confidential drafts, unreleased products, or classroom environments with strict sharing rules. Network calls may still occur for normal site assets (like scripts and styles), but your image contents stay local. Always combine technical privacy with organizational policy: if a file is secret, also limit screen sharing and downloads on shared machines.
Viber’s pickers are convenient for one-off shares straight from the camera roll, especially when speed matters more than repeatable filenames. SynthQuery’s resizer instead gives explicit pixel targets, batch ZIP exports, transparent sticker letterboxing, focal-point-driven Fill crops, and a sticker grid preview—ideal when creative originates in desktop tools or when marketing ops must hand hundreds of files to engineering. Use both: normalize geometry here, then perform final visual QA inside Viber before high-stakes launches.
Resize for Viber - Free Online Image Resizer
720×720 profile & groups, 490×490 stickers, 720×360 channel cover, 600×338 business, shared ≤1600px, bot keyboard sizes · Fit / fill / stretch · Focal crop · PNG/JPG · Batch ZIP · Local only (RESIZE-016)