One curve out of many exports
TradingView only backtests as far as its bar limit reaches, so a long test comes out in chunks — and the chunks overlap. Drop them in and you get one equity curve, with the trades the overlaps share counted once.
What it does with the overlap
The shaded bands are where two exports cover the same days. Joined naively, every trade in them is counted twice and the curve flatters itself. They are matched and counted once.
Drop the files in any order
Each export is read, sorted by its own timestamps and placed on one timeline. You do not have to remember which chunk came first.
The duplicates are shown, not hidden
A table lists what came from where and how many trades the overlap removed. A number you cannot check is worth nothing in a backtest.
It is a reading tool, not a verdict
A stitched curve is still a backtest: the same assumptions, the same absent slippage. It tells you what the strategy did on past bars, not what it will do.
Questions
Which exports does it take?
The CSV a TradingView strategy writes from its list of trades. Several files at once, from the same strategy and symbol.
How are duplicate trades found?
By matching entry time, direction and price across the overlapping range. A trade present in two exports is kept once; the table shows how many were removed.
Does it upload my backtests?
No. The files are read in the browser and the curve is drawn there. The tool is part of the app, so it opens in a tab of its own.
Why not just backtest a longer range?
Because TradingView limits how many bars a strategy sees, and on low timeframes that limit is reached within weeks. Stitching is the way to look at a year without changing the timeframe.
