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Interactive Chart Tool

Free Support Resistance Visualizer

Upload your historical price data and visualize key support and resistance levels. Mark, label, and save your technical analysis with our interactive chart tool.

CSV & JSON Support
Auto-Save to Browser
No Sign-Up Required

Upload Price Data

Required Format

CSV Format:

date,open,high,low,close
2026-01-01,99.0,100.5,98.5,100.2
2026-01-02,100.0,101.0,99.5,100.8

JSON Format:

[
  {"date":"2026-01-01","close":100.2}
]

Add Support / Resistance Level

What Are Support and Resistance Levels?

Support and resistance levels are fundamental concepts in technical analysis that help traders identify key price zones where buying or selling pressure is likely to emerge. A support level is a price point where demand is strong enough to prevent further decline, acting as a "floor" for the price. Conversely, a resistance level is where selling pressure prevents further advance, acting as a "ceiling."

Our free support resistance visualizer allows you to upload your historical price data and mark these critical levels directly on an interactive chart. Whether you're analyzing stocks, forex, cryptocurrencies, or commodities, visualizing support and resistance helps you make more informed trading decisions by identifying potential entry points, exit targets, and stop-loss placements.

How to Use This Support Resistance Visualizer

  1. 1

    Upload Your Price Data

    Export historical price data from your broker or trading platform in CSV or JSON format. The file should contain at minimum a date column and close price. Download our sample file to see the exact format required.

  2. 2

    Identify Key Price Levels

    Analyze the chart to identify areas where price has repeatedly bounced (support) or reversed (resistance). Look for horizontal zones where multiple touches occurred.

  3. 3

    Add Your Levels

    Enter the price value, select whether it's support or resistance, and optionally add a descriptive label. Click "Add Level" to see it appear on the chart as a horizontal line.

  4. 4

    Manage and Export

    Edit labels by clicking on them, remove levels you no longer need, or export your analysis as JSON for backup. All your work is automatically saved to your browser's localStorage.

  5. 5

    Apply to Your Trading

    Use the identified levels to plan your trades. Consider buying near support with stops below, selling near resistance, or waiting for breakouts with confirmation.

Why Use Our Support Resistance Visualizer?

Interactive Charts

Visualize your price data with smooth, responsive charts. See how your marked levels relate to historical price action.

Auto-Save Feature

Your price data and marked levels are automatically saved to your browser. Return anytime to continue your analysis.

Flexible Import

Upload CSV or JSON files from any broker or data provider. Works with stocks, forex, crypto, and futures data.

Export Analysis

Download your marked levels as JSON for backup or sharing. Keep a record of your technical analysis work.

Privacy Protected

All processing happens in your browser. Your trading data never leaves your device or gets sent to any server.

100% Free Forever

No hidden fees, no subscriptions, no registration required. Use it as much as you want, completely free.

Trading Strategies Using Support and Resistance

StrategyEntry SignalStop LossTarget
Bounce TradeBuy at support / Sell at resistanceBelow support / Above resistanceNext resistance / support level
Breakout TradeBuy above resistance / Sell below supportBelow broken level (now support)Measured move or next level
Retest TradeBuy on retest of broken resistanceBelow the retested levelPrevious swing high or higher
Range TradeBuy at range bottom / Sell at range topOutside the range boundariesOpposite side of the range

Frequently Asked Questions

What are support and resistance levels?

Support levels are price points where buying pressure historically prevents further decline. Resistance levels are price points where selling pressure historically prevents further advance. These levels form the foundation of technical analysis and help traders identify potential entry and exit points.

How do I identify support and resistance levels?

Look for price areas where the market has repeatedly bounced (support) or reversed (resistance). Key indicators include: previous highs and lows, round numbers, moving averages, Fibonacci retracements, and volume clusters. Our visualizer helps you mark and track these levels on your price charts.

Can support become resistance and vice versa?

Yes, this is called role reversal or polarity. When a support level is broken, it often becomes resistance as previous buyers who bought at that level may sell to break even. Similarly, broken resistance often becomes support. This principle is fundamental to technical analysis.

How do I use this support resistance visualizer?

Upload your historical price data (CSV or JSON format), then manually add support and resistance levels by entering price values. You can label each level, choose colors, and the chart will display horizontal lines at each level. All data is saved in your browser for future sessions.

What file formats are supported?

The visualizer accepts CSV and JSON files containing historical price data. CSV files should have columns for date and close price (optionally high, low, open). JSON files should be an array of objects with the same fields. Download our sample file to see the exact format.

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Identified Key Levels? Automate Your Trading Strategy

You've mapped out support and resistance zones. Now let Pineify's AI create automated Pine Script strategies that trade these levels for you on TradingView with precise entries and exits.

Try Pineify FreeExplore AI Stock Picker