Visual Proofing Software Built for Creative Agencies Who Hate Feedback Chaos
Drop pin annotations directly on design mockups, carousel graphics, and multi-page PDF decks. Compare version iterations side-by-side with an interactive split diff slider, eliminate vague email feedback, and capture legally recorded sign-offs inside your flat-fee client portal.
Flat $49/mo for 5 seats · Unlimited free client accounts · No credit card required
What is visual proofing software?
Visual proofing software is a collaborative review system that enables creative agencies, graphic design studios, and enterprise marketing teams to collect coordinate-specific feedback on visual digital deliverables. Rather than exchanging unorganized revision notes over email, WhatsApp, or Slack, reviewers click directly on PNG, JPG, WebP, SVG, and multi-page PDF documents to leave pinpoint comments. Native visual proofing inside Stackon eliminates separate $25/user subscription overhead by integrating design feedback directly into project management, retainer tracking, and client billing.
Everything You Need to Approve Client Work in One Screen
No third-party accounts, no software installs, and zero lost comments between review rounds.
Pinpoint Image Annotations
Click anywhere on PNG, JPG, WebP, or SVG graphics to drop numbered pins and leave precise revision comments. Contextual markers anchor feedback directly to visual coordinates.
Multi-Page PDF Reviewer
Review presentation slide decks, annual reports, and brand identity manuals with thumbnail navigation, zoom controls, and page-specific markup.
Split Diff Version Slider
Compare revision versions side-by-side using an interactive horizontal slider. Clients verify changes between Version 1 and Version 2 before signing off.
Formal Approval Audit Trail
Capture legally recorded client sign-offs with approver identity, IP address, and exact UTC timestamps to prevent "I never approved this" payment disputes.
Revision Round Guardrails
Set client revision round limits (e.g., 2 free rounds per deliverable). Out-of-scope revision requests automatically generate deposit payment links.
Passwordless Magic Links
Clients click a secure 1-click magic link in email notifications to review and approve mockups directly on their browser without login friction.
Stackon vs Legacy Visual Proofing Platforms
Comparing cost, proofing depth, and workflow continuity across modern agency review tools.
| Capability / Cost Factor | Stackon Studio | MarkUp.io | Frame.io | Filestage |
|---|---|---|---|---|
| Pricing Model | $49/mo flat (5 seats) | $20/user/mo | $25/user/mo | $49/mo (strict file caps) |
| Annual Cost for 5 Users | $588/year | $1,200/year | $1,500/year | $1,188/year |
| Unlimited Free Client Reviewers | ✓ Included (Unlimited) | ✓ Included | Limited guests | Limited review steps |
| Side-by-Side Visual Diff Slider | ✓ Native built-in | ✕ No diff slider | ✓ Video split only | ✓ Basic diff |
| Client Portal & Custom Domain | ✓ Native white-label | ✕ MarkUp branded | ✕ Adobe branded | Only on Enterprise ($249+) |
| Sync with Retainers & Invoicing | ✓ Real-time ledger sync | ✕ Standalone tool | ✕ Standalone tool | ✕ Standalone tool |
How Visual Proofing Operates in Stackon
Upload Mockup
Upload PNG, JPG, WebP, SVG, or multi-page PDF assets directly to the project milestone deliverable vault.
Client Pin Feedback
Clients receive a passwordless magic link, click on exact coordinates, and leave itemized change requests.
Designer Iteration
Designers resolve pins one by one and upload Version 2 directly to the deliverable review room.
Diff Comparison
Clients drag the interactive split slider to verify that requested adjustments were accurately executed.
Approval Audit Log
1-click sign-off generates an audit record with timestamp, approver email, and IP address, unlocking the next milestone.
Frequently Asked Questions About Visual Proofing
Direct answers to common questions about client review rooms, deliverable proofing, and pricing.
What is visual proofing software for agencies?
What deliverable formats can clients proof directly in Stackon?
How does the side-by-side visual diff slider work?
Does Stackon replace standalone proofing subscriptions like MarkUp.io or Frame.io?
How are formal client approvals recorded and timestamped?
Can non-technical clients leave feedback without creating a password?
Can we connect deliverable approvals to retainer hours and milestone billing?
How does Stackon prevent out-of-scope revision loops?
Stop Losing Client Reviews in Messy Email Threads
Give your clients a high-end visual proofing workspace under your custom agency domain for a flat $49/month. Capture faster approvals, protect your profit margins, and cut $900+/year in fragmented software seat taxes.
No credit card required · Unlimited free client accounts · Cancel anytime